SEMINARS AND CONFERENCE PRESENTATIONS


[2024]


547. Effect of circumferential deformation on the curvature energy of carbon nanotubes from first principles.

Jeeyong Lee, Hyoung Joon Choi,

Contributed talk of Jeeyong Lee,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 23-26, 2024.


546. Atomistic potential energies for phononic properties of two-dimensional transition-metal dichalcogenides.

Huiseok Jeong, Hyoung Joon Choi,

Contributed talk of Huiseok Jeong,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 23-26, 2024.


545. Development of an efficient and reliable DFT+DMFT method.

Hyoung Joon Choi,

Invited talk,

2024 KIAS-NCTS Workshop on Ab Initio Approaches to Quantum Materials, Korea Institute for Advanced Study, Seoul, Korea, April 17-19, 2024


544. Twisted two-dimensional materials.

Hyoung Joon Choi,

Colloquium,

Sungkyunkwan University, Suwon, Korea, March 20, 2024.


543. Curvature energy and circumferential deformation energy of carbon nanotubes from first principles.

Jeeyong Lee, Hyoung Joon Choi,

Contributed talk of Jeeyong Lee,

American Physical Society March Meeting, Minneapolis, MN, USA and online, March 4-8, 2024.


542. Atomistic calculation of structural and phononic properties of twisted two-dimensional transition-metal dichalcogenide.

Huiseok Jeong, Hyoung Joon Choi,

Contributed talk of Huiseok Jeong,

American Physical Society March Meeting, Minneapolis, MN, USA and online, March 4-8, 2024.


541. Electronic and phononic structures of twisted transition metal dichalcogenides.

Hyoung Joon Choi,

Invited talk,

Frontiers in Condensed Matter and Materials Physics:  A Scientific Symposium in Honor of the 75th Birthday of Steven G. Louie, University of California, Berkeley, CA, USA, March 2, 2024


540. Dichotomy of electron-phonon interaction and superconductivity in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

BrainLink X-Lab Day, Quantum Materials Symposium, YongPyong, Korea, February 18-23, 2024


539. Electronic and phononic structures of twisted transition metal dichalcogenides.

Hyoung Joon Choi,

Invited talk,

The 2nd Yonsei Berkeley Joint Workshop on Condensed Matter Physics, Yonsei University, Seoul, Korea, February 5, 2024


[2023]


538. First-principles analysis of curvature and strain energies of carbon nanotubes.

Jeeyong Lee and Hyoung Joon Choi,

Contributed talk of Jeeyong Lee,

Korean Physical Society Fall Meeting, Changwon, Korea, October 25-27, 2023.


537. First-principles study of atomic and electronic structures of nickelates.

Doo Sub Jeong and Hyoung Joon Choi,

Contributed talk of Doo Sub Jeong,

Korean Physical Society Fall Meeting, Changwon, Korea, October 25-27, 2023.


536. First-principles study of electronic structures and magnetic properties of Pb9Cu(PO4)6O.

Hyoung Joon Choi,

Contributed talk of Hyoung Joon Choi,

Korean Physical Society Fall Meeting, Changwon, Korea, October 25-27, 2023.


535. Twisted two-dimensional materials.

Hyoung Joon Choi,

Colloquium,

Department of Physics, POSTECH, Pohang, Korea, October 4, 2023.


534. Electronic structures of twisted graphene layers.

Yosep Cho, Young Woo Choi, and Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

2023 China-Korea Symposium on Low Dimensional Electronic and Photonic Materials and Devices, Nanjing, China, August 21-25, 2023.


533. Electronic structures of twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

Computational Quantum Many-Body Theory, Korea Institute for Advanced Study, Seoul, Korea, July 10-11, 2023.


532. Structural and phononic properties of twisted two-dimensional transition-metal dichalcogenides.

Huiseok Jeong, Hyoung Joon Choi,

Contributed talk of Huiseok Jeong,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2023.


531. Density functional calculation of thermal expansion of γ-GeSe.

Seonah Kim, Hyoung Joon Choi,

Contributed talk of Seonah Kim,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2023.


530. Moiré phonons in interlayer interaction of monolayer-WSe2/bilayer-MoS2 heterostructures.

Siwon Oh, Han-gyu Kim, Jungcheol Kim, Huiseok Jeong, Hyoung Joon Choi, Hyeonsik Cheong,

Contributed talk of Siwon Oh,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2023.


529. Electronic structures of twisted black phosphorus.

Hyoung Joon Choi,

Invited talk,

Quantum Materials Symposium 2023, YongPyong, Korea, February 5-10, 2023.


528. Electronic and phononic structures of twisted two-dimensional transition metal dichalcogenides.

Hyoung Joon Choi,

Contributed talk,

Van der Waals Materials SRC 2023 Winter Workshop, Yonsei University, Seoul, Korea, February 1-2, 2023.


527. Electron-phonon coupling and superconductivity in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

Twistronics 2023, University of Seoul, Seoul, Korea, January 11-13, 2023.


[2022]


526. Electron-phonon coupling and superconductivity in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

13th APCTP-IACS-KIAS Joint Conference on Emergent Phenomena in Novel Oxide Materials and Low Dimensional Systems, Asia Pacific Center for Theoretical Physics, Pohang, Korea, December 1-3, 2022.


525. Electronic and phononic properties of twisted two-dimensional materials.

Hyoung Joon Choi,

Seminar,

Department of Physics, Ulsan National University of Science and Technology, Ulsan, Korea, November 14, 2022.


524. Electronic and phononic properties of twisted two-dimensional materials.

Hyoung Joon Choi,

Seminar,

Department of Physics, Soongsil University, Seoul, Korea, October 13, 2022.


523. Electron-phonon interaction and superconductivity in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

Pacific Rim International Conference on Superconducting Materials (PRISM2022), Tohoku University (online), Sendai, Japan, September 22-23, 2022.


522. Two-dimensional Material Research: twisted layers of two-dimensional materials.

Hyoung Joon Choi,

Colloquium, 

Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, Korea, September 28, 2022.


521. Quasiparticle band structures, spontaneous polarization, and spin-splitting in few-layer and bulk γ-GeSe.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

15th Asia Pacific Physics Conference, Seoul, Korea (online), August 21-26, 2022.


520. Role of pseudospin structure in electronic transport in two-dimensional black phosphorus junctions.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Hyoung Joon Choi,

15th Asia Pacific Physics Conference, Seoul, Korea (online), August 21-26, 2022.


519. Study of spin-valley polarized electronic structures of twisted bilayer graphene based on density functional theory.

Yosep Cho, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

15th Asia Pacific Physics Conference, Seoul, Korea (online), August 21-26, 2022.


518. Band dispersions and pseudospin structures in 90°-twisted few-layer black phosphorus.

Taesik Nam, Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Taesik Nam,

15th Asia Pacific Physics Conference, Seoul, Korea (online), August 21-26, 2022.


517. A reliable parameter-free method for the analytic continuation.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

15th Asia Pacific Physics Conference, Seoul, Korea (online), August 21-26, 2022.


516. Electronic structures and effective Hamiltonian of twisted few-layer black phosphorus.

Hyoung Joon Choi,

Invited talk,

BeCaP SRC Satellite Session, The 20th International Symposium on the Physics of Semiconductors and Applications (ISPSA 2022), Ramada Plaza Jeju Hotel, Jeju, Korea, July 17-21, 2022.


515. Electronic and phononic structures of twisted layers of two-dimensional materials.

Hyoung Joon Choi,

Invited talk,

The 18th KIAS Electronic Structure Calculation Workshop, Korea Institute for Advanced Study, Seoul, Korea, July 7-8, 2022.


514. Electronic structures and interactions in graphene moiré superlattices.

Hyoung Joon Choi,

Invited talk,

22nd International Conference on the Science and Application of Nanotubes and Low-Dimensional Materials (NT22), Sungkyunkwan University, Suwon, Korea and online, June 19-24, 2022.


513. Electronic structures and interactions in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Spring Meeting (online), Korea, April 20-22, 2022.

 

512. A reliable parameter-free analytic continuation of imaginary-frequency Green’s function.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Spring Meeting (online), Korea, April 20-22, 2022.

 

511. First-principles study on phononic, electronic, and optical properties of MoSe2/WSe2 heterobilayer.

Han-gyu Kim, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

Korean Physical Society Spring Meeting (online), Korea, April 20-22, 2022.

 

510. Theoretical study of spin-valley polarized electronic structures of twisted bilayer graphene.

Yosep Cho, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

Korean Physical Society Spring Meeting (online), Korea, April 20-22, 2022.

 

509. Band structures and effective Hamiltonian of 90°-twisted few-layer black phosphorus.

Taesik Nam, Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Taesik Nam,

Korean Physical Society Spring Meeting (online), Korea, April 20-22, 2022.


508. Electronic structures of twisted few-layer black phosphorus.

Taesik Nam, Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Hyoung Joon Choi,

Van der Waals Materials SRC 2022 Spring Workshop, Yonsei University, Seoul, Korea, April 1, 2022.


507. Stacking-dependent electronic properties of few-layer and bulk γ-GeSe from GW approximation.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

American Physical Society March Meeting, Chicago, IL, USA and online, March 14-18, 2022.


506. Theoretical study of anisotropic pseudospin tunneling in two-dimensional black phosphorus junctions.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Hyoung Joon Choi,

American Physical Society March Meeting, Chicago, IL, USA and online, March 14-18, 2022.


505. Study of spin and valley properties of magic-angle twisted bilayer graphene based on density functional theory.

Yosep Cho, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

American Physical Society March Meeting, Chicago, IL, USA and online, March 14-18, 2022.


504. Electronic structures of twisted few-layer black phosphorus.

Taesik Nam, Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Taesik Nam,

American Physical Society March Meeting, Chicago, IL, USA and online, March 14-18, 2022.


503. Analytic continuation of the imaginary-frequency Green's function via causal smoothing spline approach.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

American Physical Society March Meeting, Chicago, IL, USA and online, March 14-18, 2022.


502. Electronic structures and electron-phonon Interaction In twisted graphene layers.

Hyoung Joon Choi,

Plenary talk,

International Conference on Frontiers of Physics 2022 (online), Kathmandu, Nepal, January 22-24, 2022.

 

[2021]


501. Electronic structures and electron-phonon coupling in twisted graphene layers.

Young Woo Choi, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

The 12th International Conference on Advanced Materials and Devices, Jeju, Korea, December 6-10, 2021.


500. GW studies of electronic structures in bulk and few-layer Mo and W dichalcogenides and bulk and few-layer γ-GeSe.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Hyoung Joon Choi,

2021 China-Korea Symposium on Low Dimensional Electronic and Photonic Materials and Devices, Jeju, Korea and online, December 6-7, 2021.


499. Electronic structure and electron-phonon coupling in graphene moiré superlattices.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

Asia-Pacific Conference on Condensed Matter Physics 2021 (online), December 1-3, 2021.


498. First-principles study on stacking-dependent electronic properties of few-layer and bulk γ-GeSe.

Han-gyu Kim, Hyoung Joon Choi,

Poster,

Asia-Pacific Conference on Condensed Matter Physics 2021 (online), December 1-3, 2021.


497. Causal optimization approach for imaginary-time Green’s functions in correlated electron systems.

Mancheon Han, Hyoung Joon Choi,

Poster,

Asia-Pacific Conference on Condensed Matter Physics 2021 (online), December 1-3, 2021.


496. Anisotropic pseudospin tunneling in two-dimensional black phosphorus junctions .

Young Woo Choi, Hyoung Joon Choi,

Poster,

Asia-Pacific Conference on Condensed Matter Physics 2021 (online), December 1-3, 2021.


495. Electronic structures and electron-phonon interaction in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

Workshop on Functional Quantum Matter, Sungkyunkwan University, Suwon, Korea, November 19, 2021.


494. Causal optimization method for imaginary-time Green’s functions in interacting electron systems.

Hyoung Joon Choi,

Seminar,

Korea Institute for Advanced Study, Seoul, Korea, November 12, 2021.


493. Causal optimization method for imaginary-time simulation of interacting electron systems.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Fall Meeting (online), Korea, October 20-22, 2021.

 

492. Physical Properties of twisted graphene layers (비틀린 그래핀 다중층의 물리적 성질).

Hyoung Joon Choi,

Colloquium (online),

Department of Physics, Hanyang University, Seoul, Korea, September 8, 2021.


491. Thickness dependence of work function, ionization energy, and electron affinity of Mo and W dichalcogenides from DFT and GW calculations.

Hyoung Joon Choi,

Contributed talk,

Van der Waals Materials SRC 2021 Summer Workshop, Yonsei University, Seoul, Korea, August 18-19, 2021.


490. Introduction to spin-orbit interaction and DFT+U method.

Hyoung Joon Choi,

Lecture (online),

2021 KIAS-APCTP Electronic Structure Calculation School, Korea, June 28-30, 2021.

 

489. Two-dimensional Material Research (2차원 물질 연구).

Hyoung Joon Choi,

Colloquium (online),

Department of Physics and Astronomy, Sejong University, Seoul, Korea, May 12, 2021.

 

488. Doping and electric-field dependences of electronic structures in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Spring Meeting (online), Korea, April 21-23, 2021.

 

487. Causal smoothing spline approach for analytic continuation of imaginary frequency Green’s function.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Spring Meeting (online), Korea, April 21-23, 2021.

 

486. Crucial role of sublattice polarization on electron-phonon coupling in twisted graphene layers.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

Korean Physical Society Spring Meeting (online), Korea, April 21-23, 2021.

 

485. Synthesis and characterization of hexagonal GeSe.

Sol Lee, Joong-Eon Jung, Han-gyu Kim, Yangjin Lee, Je Myoung Park, Jeongsu Jang, Sangho Yoon, Arnab Ghosh, Minseol Kim, Woongki Na, Jonghwan Kim, Hyoung Joon Choi, Hyeonsik Cheong, Kwanpyo Kim,

Contributed talk of Sol Lee,

Korean Physical Society Spring Meeting (online), Korea, April 21-23, 2021.

 

484. Stacking-dependent quasiparticle band structure, spontaneous polarization, and spin-splitting in few-layer and bulk γ-GeSe.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

Korean Physical Society Spring Meeting (online), Korea, April 21-23, 2021.

 

483. First-Principles Study of Electronic Structures and Topological Properties of hexagonal networks of carbon.

Woochang Kim, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Woochang Kim,

Korean Physical Society Spring Meeting (online), Korea, April 21-23, 2021.

 

482. Density functional theory study of ferromagnetic phase diagram of magic-angle twisted bilayer graphene.

Yosep Cho, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

Korean Physical Society Spring Meeting (online), Korea, April 21-23, 2021.

 

481. Electronic Structures of twisted bilayer of gapped two-dimensional semi-Dirac materials.

Taesik Nam, Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Taesik Nam,

Korean Physical Society Spring Meeting (online), Korea, April 21-23, 2021.

 

480. Electronic properties of few-layer and bulk γ-GeSe.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

van der Waals Materials SRC 2021 Spring Workshop, Yonsei University, Seoul, Korea, March 26, 2021.

 

479. Electronic properties of twisted graphene layer.

Hyoung Joon Choi,

Contributed talk,

van der Waals Materials SRC 2021 Spring Workshop, Yonsei University, Seoul, Korea, March 26, 2021.

 

478. Atomistic study of electron-phonon coupling in twisted graphene layers.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

American Physical Society March Meeting (online), USA, March 15-19, 2021.

 

477. Thickness dependence of work function, ionization energy, and electron affinity of bulk and few-layer transition metal dichalcogenides.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim

American Physical Society March Meeting (online), USA, March 15-19, 2021.

 

476. Doping dependence of low-energy band dispersions and magnetic properties of twisted bilayer graphene.

Yosep Cho, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

American Physical Society March Meeting (online), USA, March 15-19, 2021.

 

475. Causal projection approach for imaginary-time quantum many-body simulations.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

American Physical Society March Meeting (online), USA, March 15-19, 2021.

 

474. First-principles study on the electronic structure and topological properties of heavy-element-decorated α-graphdiyne.

Woochang Kim, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Woochang Kim,

American Physical Society March Meeting (online), USA, March 15-19, 2021.

 

473. Electronic structures and electron-phonon interactions in twisted graphene layers.

Hyoung Joon Choi,

Contributed talk,

Yonsei University - UC Berkeley Online Workshop on Condensed Matter Physics, Korea, February 18-19, 2021.

 

[2020]

 

472. Epitaxial growth of single-crystalline metal films on black phosphorus.

Yangjin Lee, Han-gyu Kim, Tae Keun Yun, Jong Chan Kim, Sol Lee, Sung Jin Yang, Myeongjin Jang, Donggyu Kim, Huije Ryu, Gwan-Hyoung Lee, Seongil Im, Hu Young Jeong, Hyoung Joon Choi, Kwanpyo Kim,

Contributed talk of Yangjin Lee,

Korean Physical Society Fall Meeting (online), Korea, November 4-6, 2020.

 

471. Pseudospin tunneling in two-dimensional black phosphorus junctions.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

Korean Physical Society Fall Meeting (online), Korea, November 4-6, 2020.

 

470. First-principles study of metal-atom adsorption on black phosphorus.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim

Korean Physical Society Fall Meeting (online), Korea, November 4-6, 2020.

 

469. Effects of doping on electronic and magnetic properties of twisted graphene.

Yosep Cho, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

Korean Physical Society Fall Meeting (online), Korea, November 4-6, 2020.

 

468. Causal projection method for imaginary-time many-body simulations.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Fall Meeting (online), Korea, November 4-6, 2020.

 

467. Electron-phonon coupling and its role for superconductivity in twisted graphene layers.

Young Woo Choi, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

Korean Physical Society Fall Meeting (online), Korea, November 4-6, 2020.

 

466. Electronic structure and electron-phonon interaction in twisted graphene layers.

Hyoung Joon Choi,

Seminar,

Korea Institute for Advanced Study, Seoul, Korea, October 30, 2020.

 

465. Effect of correlation on nearly flat bands in twisted bilayer graphene.

Mancheon Han, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Spring Meeting (online), Korea, July 13-15, 2020.

 

[2019]

 

464. First-Principles Study of Electronic Structure in Doped Twisted Bilayer Graphene.

Yosep Cho, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

The 14th Asia Pacific Physics Conference, Kuching, Malaysia, November 17-21, 2019.

 

463. Quasiparticle Band Structure of Transition-Metal Dichalcogenides from GW Approximation.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

The 14th Asia Pacific Physics Conference, Kuching, Malaysia, November 17-21, 2019.

 

462. Atomistic study of Electronic and Phononic Properties of Twisted Graphene Layers.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

The 14th Asia Pacific Physics Conference, Kuching, Malaysia, November 17-21, 2019.

 

461. Effect of Surface Doping on Electron Correlation in FeSe Layer.

Hyoung Joon Choi,

Invited talk,

The 14th Asia Pacific Physics Conference, Kuching, Malaysia, November 17-21, 2019.

 

460. Atomistic Study of Electronic Structure and Electron-Phonon Coupling in Twisted Graphene Layers.

Young Woo Choi, Hyoung Joon Choi,

Poster,

The 22nd Asian Workshop on First-Principles Electronic Structure Calculations, Osaka University, Japan, October 28–30, 2019.

 

459. Effect of surface doping on electron correlation in FeSe.

Hyoung Joon Choi,

Invited talk,

The 22nd Asian Workshop on First-Principles Electronic Structure Calculations, Osaka University, Japan, October 28–30, 2019.

 

458. Electron-Phonon Coupling in Twisted Double Bilayer Graphene.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

Korean Physical Society Fall Meeting, Gwangju, Korea, October 23-25, 2019.

 

457. Doping dependence of low-energy electronic properties in twisted bilayer graphene.

Yosep Cho, Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

Korean Physical Society Fall Meeting, Gwangju, Korea, October 23-25, 2019.

 

456. First-principles studies on quasiparticle band structure of transition-metal dichalcogenides.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

Korean Physical Society Fall Meeting, Gwangju, Korea, October 23-25, 2019.

 

455. Symmetry breaking in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Fall Meeting, Gwangju, Korea, October 23-25, 2019.

 

454. Electronic and phononic properties of twisted graphene layers.

Hyoung Joon Choi,

Seminar,

Postech, Pohang, Korea, September 27, 2019.

 

453. Electronic and phononic properties of twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

2019 Korea Supercomputing Conference & 2019 KREONET Workshop, The-K hotel, Seoul, Korea, September 5-6, 2019.

 

452. First-principles study of magnetism in doped PdSe2 monolayer.

Yosep Cho, Hyoung Joon Choi,

Poster,

11th International Conference on Magnetic and Superconducting Materials (MSM19), Seoul National University, Seoul, Korea, August 17-24, 2019.

 

451. First-principles study of intrinsic anomalous Hall conductivity in transition metals.

Juwon Oh, Hyoung Joon Choi,

Poster,

11th International Conference on Magnetic and Superconducting Materials (MSM19), Seoul National University, Seoul, Korea, August 17-24, 2019.

 

450. Role of Electric Fields on Electron Correlation in Surface-Doped FeSe.

Young Woo Choi, Hyoung Joon Choi,

Poster,

11th International Conference on Magnetic and Superconducting Materials (MSM19), Seoul National University, Seoul, Korea, August 17-24, 2019.

 

449. Quasiparticle energy and band gap of bulk and few-layer PdSe2.

Han-gyu Kim, Hyoung Joon Choi,

Poster,

11th International Conference on Magnetic and Superconducting Materials (MSM19), Seoul National University, Seoul, Korea, August 17-24, 2019.

 

448. Electronic structure and electron-phonon coupling in twisted graphene layers.

Hyoung Joon Choi,

Invited talk,

11th International Conference on Magnetic and Superconducting Materials (MSM19), Seoul National University, Seoul, Korea, August 17-24, 2019.

 

447. Atomistic calculation of magic-angle twisted bilayer graphene and twisted double bilayer graphene.

Hyoung Joon Choi,

Invited talk,

31st IUPAP Conference on Computational Physics (CCP2019), The Chinese University of Hong Kong, Hong Kong, July 28 - August 1, 2019.

 

446. Atomistic calculation of electron-phonon interaction in twisted bilayer graphene.

Hyoung Joon Choi,

Invited talk,

The Korean Superconductivity Society Summer Meeting, YongPyong Resort, Korea, July 8-10, 2019.

 

445. Atomic and Electronic Structure of Twisted Graphene Layers.

Young Woo Choi, Hyoung Joon Choi,

Poster,

The 15th KIAS Electronic Structure Calculation Workshop, Korea Institute for Advanced Study, Seoul, Korea, July 4-5, 2019.

 

444. First-principles study of magnetic properties in hole-doped two-dimensional PdSe2.

Yosep Cho, Hyoung Joon Choi,

Poster,

The 15th KIAS Electronic Structure Calculation Workshop, Korea Institute for Advanced Study, Seoul, Korea, July 4-5, 2019.

 

443. Ab initio study of intrinsic anomalous Hall conductivity in ferromagnets.

Juwon Oh, Hyoung Joon Choi,

Poster,

The 15th KIAS Electronic Structure Calculation Workshop, Korea Institute for Advanced Study, Seoul, Korea, July 4-5, 2019.

 

442. First-principles study of quasiparticle energies of bulk and few-layer PdSe2.

Han-gyu Kim, Hyoung Joon Choi,

Poster,

The 15th KIAS Electronic Structure Calculation Workshop, Korea Institute for Advanced Study, Seoul, Korea, July 4-5, 2019.

 

441. DFT+DMFT study of electron correlation in surface-doped FeSe layer.

Hyoung Joon Choi,

Invited talk,

The 15th KIAS Electronic Structure Calculation Workshop, Korea Institute for Advanced Study, Seoul, Korea, July 4-5, 2019.

 

440. Atomistic study of magic-angle twisted bilayer graphene and twisted double bilayer graphene.

Hyoung Joon Choi,

Invited talk,

KIAS Workshop on Topology and Correlation in Quantum Materials, Busan, Korea, May 29-31, 2019.

 

439. Atomistic study of electron-hole asymmetry and electron-phonon interaction in magic-angle twisted bilayer graphene.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 24-26, 2019.

 

438. First-principles study of work functions of transition-metal dichalcogenides.

Han-gyu Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 24-26, 2019.

 

437. Unveiling degradation mechanism of black phosphorus by scanning probe microscopy and theoretical modeling.

Minju Kim, Han-gyu Kim, Hyoung Joon Choi, Seongil Im, Hyunbok Lee, Taekyeong Kim, Yeonjin Yi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 24-26, 2019.

 

436. Study of intrinsic anomalous Hall conductivity using DFT+U method.

Juwon Oh, Hyoung Joon Choi,

Contributed talk of Juwon Oh,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 24-26, 2019.

 

435. Atomistic study on the electronic structure of twisted double bilayer graphene.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 24-26, 2019.

 

434. Doping-method dependence of magnetism in two-dimensional PdSe2.

Yosep Cho, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 24-26, 2019.

 

433. 2차원 물질의 매력.

Hyoung Joon Choi,

Colloquium,

Department of Physics, Hanyang University, Seoul, Korea, April 10, 2019.

 

432. Role of electric fields on enhanced electron correlation in surface-doped FeSe.

Hyoung Joon Choi,

Seminar,

Department of Physics, Rice University, Houton, Texas, USA, March 18, 2019.

 

431. First-principles studies on electronic band structure of PdSe2 with GW approximation.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

American Physical Society March Meeting, Boston, MA, USA, March 4-8, 2019.

 

430. Doping dependent magnetic properties in monolayer PdSe2.

Yosep Cho, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

American Physical Society March Meeting, Boston, MA, USA, March 4-8, 2019.

 

429. Atomistic study of electron-phonon coupling in magic-angle twisted bilayer graphene.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

American Physical Society March Meeting, Boston, MA, USA, March 4-8, 2019.

 

428. Charge self-consistent DFT+DMFT study on magnetism of transition metals.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

American Physical Society March Meeting, Boston, MA, USA, March 4-8, 2019.

 

427. Ab initio calculation of intrinsic anomalous and spin Hall conductivity using localized pseudoatomic orbitals.

Juwon Oh, Hyoung Joon Choi,

Contributed talk of Juwon Oh,

American Physical Society March Meeting, Boston, MA, USA, March 4-8, 2019.

 

426. Quasiparticle electronic structure of PdSe2 in the GW approximation.

Han-gyu Kim, Hyoung Joon Choi,

Poster of Han-gyu Kim,

APCTP-KIAS Quantum Materials Symposium 2019, YongPyong, Korea, February 10-15, 2019

 

425. First-principles calculation of intrinsic anomalous and spin Hall conductivity using localized pseudoatomic orbitals.

Juwon Oh, Hyoung Joon Choi,

Poster of Juwon Oh,

APCTP-KIAS Quantum Materials Symposium 2019, YongPyong, Korea, February 10-15, 2019

 

424. Doping-method dependence of ferromagnetic properties in monolayer PdSe2.

Yosep Cho, Hyoung Joon Choi,

Poster of Yosep Cho,

APCTP-KIAS Quantum Materials Symposium 2019, YongPyong, Korea, February 10-15, 2019

 

423. Effects of electric fields on electron correlation in surface-doped FeSe.

Young Woo Choi, Hyoung Joon Choi,

Poster of Young Woo Choi,

APCTP-KIAS Quantum Materials Symposium 2019, YongPyong, Korea, February 10-15, 2019

 

422. Atomistic study of electron-phonon interaction in magic-angle twisted bilayer graphene.

Young Woo Choi, Hyoung Joon Choi,

Poster of Young Woo Choi,

APCTP-KIAS Quantum Materials Symposium 2019, YongPyong, Korea, February 10-15, 2019

 

421. DFT+DMFT study of magnetism in transition metals.

Mancheon Han, Hyoung Joon Choi,

Poster of Mancheon Han,

APCTP-KIAS Quantum Materials Symposium 2019, YongPyong, Korea, February 10-15, 2019

 

420. DFT+DMFT study of surface-doped FeSe layers.

Young Woo Choi, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

APCTP-KIAS Quantum Materials Symposium 2019, YongPyong, Korea, February 10-15, 2019

 

[2018]

 

419. Structural relaxation, electronic structure, and electron-phonon coupling in magic-angle twisted bilayer graphene.

Young Woo Choi, Hyoung Joon Choi,

Poster of Young Woo Choi,

The 21th Asian Workshop on First-Principles Electronic Structure Calculations, KAIST, Daejeon, Korea, Oct. 29 - 31, 2018.

 

418. Doping-method dependence of magnetism in two-dimensional PdSe2.

Yosep Cho, Hyoung Joon Choi,

Poster of Yosep Cho,

Korean Physical Society Fall Meeting, Changwon, Korea, Oct. 24 - 26, 2018.

 

417. First-principles calculation of intrinsic anomalous and spin Hall conductivity in transition metals.

Juwon Oh, Hyoung Joon Choi,

Poster of Juwon Oh,

Korean Physical Society Fall Meeting, Changwon, Korea, Oct. 24 - 26, 2018.

 

416. Electron-phonon interactions in magic-angle twisted bilayer graphene.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

Korean Physical Society Fall Meeting, Changwon, Korea, Oct. 24 - 26, 2018.

 

415. Electronic band structures of bulk and few-layer PdSe2.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Hyoung Joon Choi,

2018 Korea-China Symposium on Low Dimensional Electronic and Photonic Materials and Devices, GIST, Gwangju, Korea, August 24-28, 2018.

 

414. Role of electric field in electron-doped FeSe layers.

Hyoung Joon Choi,

Seminar,

Korea Institute for Advanced Study, Seoul, Korea, July 26, 2018.

 

413. Electronic structure calculation of correlated electron materials.

Mancheon Han, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

4th Workshop on Supercomputing for Computational Bio/Nano/Materials Science, KT Human Resources Development Center, Daejeon, Korea, July 10-11, 2018.

 

412. Dirac semimetal phase of two-dimensional black phosphorus.

Hyoung Joon Choi,

Invited talk,

International Conference on Science and Technology of Synthetic Metals 2018 (ICSM2018), BEXCO, Busan, Korea, July 1-6, 2018.

 

411. Role of electric field in FeSe layers.

Hyoung Joon Choi,

Seminar,

CCES, Seoul National University, Seoul, Korea, May 26, 2018.

 

410. Efficient implementation of DFT+DMFT.

Mancheon Han, Hyungju Oh, Choong-Ki Lee, Hyoung Joon Choi,

Poster of Mancheon Han,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 25-27, 2018.

 

409. First-principles investigation of off-diagonal electron-phonon interaction in graphene.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 25-27, 2018.

 

408. Quasi-particle band structure of bulk and few-layer PdSe2 with GW approximation.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 25-27, 2018.

 

407. Projection orbital dependence of DFT+DMFT.

Mancheon Han, Hyungju Oh, Choong-Ki Lee, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 25-27, 2018.

 

406. Magnetism in doped two-dimensional PdSe2.

Yosep Cho, Hyoung Joon Choi,

Contributed talk of Yosep Cho,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 25-27, 2018.

 

405. Search for magnetism in two-dimensional PdSe2 and PdS2.

Yosep Cho, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

The Korean Magnetics Society 2018 Spring Conference, Sol Beach, Samcheok, Korea, March 29-31, 2018.

 

404. 이차원 물질의 매력

Hyoung Joon Choi,

Colloquium,

Department of Physics, Chung-Ang University, Seoul, Korea, March 26, 2018.

 

403. Microscopic observation of coherent 2D metallic behavior on the Pd-terminated surface of metallic delafossite PdCrO2.

Jinoh Jung, Jong Ok, Hyoung Joon Choi, Sehoon Oh, Won-Jun Jang, Yeonghoon Lee, Sungbin Lee, Jun Sung Kim, Jhinhwan Lee,

Contributed talk of Jinoh Jung,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

402. Switching magnetism and superconductivity with spin-polarized current in iron-based superconductor.

Seokhwan Choi, Hyoung Joon Choi, Jong Ok, Yeonghoon Lee, Won-Jun Jang, Alex Lee, Young Kuk, Sungbin Lee, Andreas Heinrich, Sang-Wook Cheong, Yunkyu Bang, Steven Johnston, Jun Sung Kim, Jhinhwan Lee,

Contributed talk of Seokhwan Choi,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

401. Superconductivity switched by spin-current and enhanced by forward-scattering interfacial phonons in heterostructure iron-based superconductor.

Jhinhwan Lee, Seokhwan Choi, Jinoh Jung, Yeonghoon Lee, Sungbin Lee, Yannis Semertzidis, Jong Ok, Jun Sung Kim, Steven Johnston, Hyoung Joon Choi, Yunkyu Bang, Sang-Wook Cheong, Andreas Heinrich, Won-Jun Jang, Alex Lee

Contributed talk of Jhinhwan Lee,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

400. Two-dimensional MoS2 field-effect-transistors with graphene and titanium source-drain contacts.

Seung Su Baik, Seongil Im, Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

399. Role of the charge-transfer induced electric field in potassium-dosed FeSe layers.

Young Woo Choi, Hyoung Joon Choi,

Contributed talk of Young Woo Choi,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

398. Work functions of two-dimensional black phosphorus from first principles.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

397. Symmetry-protected Dirac semimetal phase in surface-doped black phosphorus.

Jimin Kim, Seung Su Baik, Sungwon Jung, Yeongsup Sohn, Sae Hee Ryu, Hyoung Joon Choi, Bohm-Jung Yang, Keun Su Kim,

Contributed talk of Jimin Kim,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

396. The layer-dependence on the work function and degradation evolution of black phosphorus.

Minju Kim, Han-gyu Kim, Soohyung Park, Jin Sung Kim, Hyoung Joon Choi, Seongil Im, Hyunbok Lee, Taekyeong Kim, Yeonjin Yi,

Contributed talk of Minju Kim,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

395. Improving efficiency of the continuous-time quantum Monte Carlo.

Mancheon Han, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

American Physical Society March Meeting, Los Angeles, CA, USA, March 5-9, 2018.

 

[2017]

 

394. Structural deformation in SmB6 studied by Raman spectroscopy.

Thi Huyen Nguyen, Boyoun Kang, Beongki Cho, Mancheon Han, Hyoung Joon Choi, Mikye Kong, Yongjae Lee, In-Sang Yang,

Poster,

The 10th International Conference on Advanced Materials and Devices (ICAMD 2017), Jeju, Korea, December 5-8, 2017

 

393. Diffusion and doping properties of hydrogen adatoms in two-dimensional transition-metal dichalcogenides.

Sehoon Oh, June Yeong Lim, Seongil Im, Hyoung Joon Choi,

Contributed talk of Hyoung Joon Choi,

2017 China-Korea Symposium on Low Dimensional Electronic and Photonic Materials and Devices, Shenzhen, China, November 4-8, 2017

 

392. 반데르발스 물질의 매력.

Hyoung Joon Choi,

Colloquium,

Department of Physics, University of Seoul, Seoul, Korea, November 3, 2017.

 

391. Microscopic observation of highly coherent 2D metallic behavior on disordered surface of metallic delafossite PdCrO2.

Jinoh Jung, Jong Mok Ok, Hyoung Joon Choi, Sehoon Oh, Won-Jun Jang, Yeonghoon Lee, SungBin Lee, Jun Sung Kim, Jhinhwan Lee,

Contributed talk of Jinoh Jung,

Korean Physical Society Fall Meeting, Gyeongju, Korea, October 25-27, 2017

 

390. Switching magnetism and superconductivity with spin-polarized current in an iron-based superconductor.

Seokhwan Choi, Hyoung Joon Choi, Jong Mok Ok, Yeonghoon Lee, Won-Jun Jang, Alex Taekyung Lee, Young Kuk, SungBin Lee, Andreas J. Heinrich, Sang-Wook Cheong,Yunkyu Bang, Steven Johnston, Jun Sung Kim, Jhinhwan Lee,

Contributed talk of Seokhwan Choi,

Korean Physical Society Fall Meeting, Gyeongju, Korea, October 25-27, 2017

 

389. Orbital angular momentum analysis for giant spin splitting in solids and nanostructures.

Sehoon Oh, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

Korean Physical Society Fall Meeting, Gyeongju, Korea, October 25-27, 2017

 

388. Many-body effects in electronic structures of two-dimensional materials: black phosphorus and FeSe.

Hyoung Joon Choi,

Invited talk,

The 19th International Conference on Recent Progress in Many-Body Theories, POSTECH, Pohang, Korea, Jun. 25-30, 2017

 

387. Different Raman spectra of SmB6 (6N) and SmB6 (3N).

Thi Huyen Nguyen, Boyoun Kang, Beongki Cho, Mancheon Han, Hyoung Joon Choi, In-Sang Yang,

Contributed talk of Thi Huyen Nguyen,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2017

 

386. Manipulation of the edge states in two dimensional topological insulator.

Hyeonjin Doh, Hyoung Joon Choi,

Invited talk of Hyeonjin Doh,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2017

 

385. First-principles study of work functions of black phosphorus nanosheets.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2017

 

384. Development of impurity solvers for the dynamical mean field theory: IPT, ED, and CTQMC.

Mancheon Han, Hyungju Oh, Choong-Ki Lee, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2017

 

383. Electron doping by atomic hydrogen in two-dimensional transition-metal dichalcogenides.

Sehoon Oh, Hyoung Joon Choi,

Contributed talk of Sehoon Oh,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2017.

 

382. First-principles study on the enhanced electronic correlation in the potassium-doped surface layer of FeSe.

Young-Woo Choe, Hyoung Joon Choi,

Contributed talk of Young-Woo Choe,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 19-21, 2017.

 

381. Two-dimensional massless Dirac fermions and Fermi level matching with Dirac points in alkaline-metal doped few-layer black phosphorus.

Seung Su Baik, Young-Woo Son, Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

American Physical Society March Meeting, New Orleans, LA, USA, March 13-17, 2017.

 

380. Control of the edge-state in quantum spin Hall system with a transverse electric field and edge-functionalization.

Hyeonjin Doh, Hyoung Joon Choi,

Contributed talk of Hyeonjin Doh,

American Physical Society March Meeting, New Orleans, LA, USA, March 13-17, 2017.

 

379. Comparative study of impurity solvers for dynamical mean field theory.

Mancheon Han, Hyungju Oh, Choong-Ki Lee, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

American Physical Society March Meeting, New Orleans, LA, USA, March 13-17, 2017.

 

378. Electron-doping by hydrogen in transition-metal dichalcogenides.

Sehoon Oh, Seongil Im, Hyoung Joon Choi,

Contributed talk of Sehoon Oh,

American Physical Society March Meeting, New Orleans, LA, USA, March 13-17, 2017.

 

377. First-principles study of band-gap inverted bulk black phosphorus.

Han-gyu Kim, Hyoung Joon Choi,

Contributed talk of Han-gyu Kim,

American Physical Society March Meeting, New Orleans, LA, USA, March 13-17, 2017.

 

376. Effects of the potassium dosing on the electronic correlation in FeSe : DFT+DMFT study.

Young-Woo Choe, Hyoung Joon Choi,

Contributed talk of Young-Woo Choe,

American Physical Society March Meeting, New Orleans, LA, USA, March 13-17, 2017.

 

375. Theoretical study on Dirac semimetal properties of black phosphorus.

Hyoung Joon Choi,

Invited talk,

The 52nd Winter Annual Conference of the Korean Vacuum Society, Welli Hilli Park, Korea, Feb. 15-17, 2017.

 

[2016]

 

374. Density functional calculation of electronic structure in black phosphorus.

Hyoung Joon Choi,

Invited talk,

2nd Workshop on Supercomputing for Computational Bio/Nano/Materials Science, Konjiam Resort, Gyeonggi-do, Korea, December 19-21, 2016.

 

373. Band gap engineering and Dirac semimetal phase in black phosphorus.

Hyoung Joon Choi,

Invited talk,

The 19th Asian Workshop on First-Principles Electronic Structure Calculations, National Chiao Tung University, Hsinchu, Taiwan, October 31 - November 2, 2016.

 

372. Doping dependent electronic correlations in FeSe: DFT+DMFT study.

Young-Woo Choe, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 19-21, 2016.

 

371. Edge state of boundary-functionalized 2D topological insulator.

Hyeonjin Doh, Hyoung Joon Choi,

Contributed talk of Hyeonjin Doh,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 19-21, 2016.

 

370. Effects of spin-orbit coupling on the electronic structure of band-gap inverted bulk black phosphorus.

Han-gyu Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 19-21, 2016.

 

369. Dirac semimetal phase in black phosphorus.

Hyoung Joon Choi,

Invited talk,

8th International Conference on Recent Progress in Graphene/2D Research, Sungkyunkwan University, Seoul, Korea, September 25-29, 2016.

 

368. Dirac semimetal properties of black phosphorus.

Hyoung Joon Choi,

Contributed talk,

2016 Korea-China Symposium on Low Dimensional Electronic and Photonic Materials and Devices, Ewha University, Seoul, Korea, September 21, 2016.

 

367. Dirac semimetal properties in black phosphorus.

Hyoung Joon Choi,

Seminar,

Department of Physics, University of Toronto, Toronto, Canada, August 30, 2016.

 

366. Dirac fermions in black phosphorus.

Hyoung Joon Choi,

Colloquium,

Department of Physics, University of Ulsan, Ulsan, Korea, April 28, 2016.

 

365. Revisiting the effects of spin-orbit interaction in antiferromagnetic LaFeAsO.

Sehoon Oh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 20-22, 2016.

 

364. First-principles studies on electronic band structures of potassium-doped few-layer black phosphorus with GW approximation.

Han-Gyu Kim, Seung Su Baik, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 20-22, 2016.

 

363. First-principles study of subsurface defects in topological insulator Bi2Se3 including van der Waals interaction.

Young-Woo Choe, Joon-Suh Park, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 20-22, 2016.

 

362. Multi-orbital iterative perturbation theory as an impurity solver for DFT+DMFT.

Mancheon Han, Choong-Ki Lee, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Spring Meeting, Daejeon, Korea, April 20-22, 2016.

 

361. Massless Dirac fermions in potassium-doped few-layer black phosphorus.

Hyoung Joon Choi,

Invited talk,

Graphene 2016, Genoa, Italy, April 19-22, 2016.

 

360. Improved measurement scheme of the self energy in the worm-sampled hybridization-expansion quantum Monte Carlo.

Mancheon Han, Choong-Ki Lee, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

American Physical Society March Meeting, Baltimore, Maryland, USA, March 14-18, 2016.

 

359. A mechanism for orbital angular momentum and giant spin splitting in solids and nanostructures.

Sehoon Oh, Hyoung Joon Choi,

Contributed talk of Sehoon Oh,

American Physical Society March Meeting, Baltimore, Maryland, USA, March 14-18, 2016.

 

358. Two-dimensional massless Dirac fermions, chiral pseudo-spins, and Berry's phase in few-layer black phosphorus.

Seung Su Baik, Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

American Physical Society March Meeting, Baltimore, Maryland, USA, March 14-18, 2016.

 

357. Tight-binding model study of topological properties in few-layer black phosphorus.

Hyeonjin Doh, Hyoung Joon Choi,

Contributed talk of Hyeonjin Doh,

American Physical Society March Meeting, Baltimore, Maryland, USA, March 14-18, 2016.

 

356. Quasi-particle band structure of potassium-doped few-layer black phosphorus with GW approximation.

Han-Gyu Kim, Seung Su Baik, Hyoung Joon Choi,

Contributed talk of Han-Gyu Kim,

American Physical Society March Meeting, Baltimore, Maryland, USA, March 14-18, 2016.

 

355. Dirac semimetal properties of black phosphorus.

Hyoung Joon Choi,

Colloquium,

School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Korea, March 10, 2016.

 

354. Dirac semimetal properties of black phosphorus.

Hyoung Joon Choi,

Colloquium,

EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea, March 9, 2016.

 

353. Spin-fluctuation-mediated pairing mechanism for high-temperature superconductivity.

Hyoung Joon Choi,

Invited talk, APCTP focus program,

Seoul Branch, Asia Pacific Center for Theoretical Physics (APCTP), Seoul, Korea, March 4, 2016.

 

352. Physical properties of unconventional superconducting materials.

Hyoung Joon Choi,

Seminar,

Korea Research Institute of Standards and Science (KRISS), Daejeon, Korea, February 4, 2016.

 

351. Dirac semimetal properties of K doped black phosphorus.

Hyoung Joon Choi,

Seminar,

Department of Physics, Tsinghua University, Beijing, China, January 21, 2016.

 

[2015]

 

350. Massless Dirac fermions in K doped black phosphorus.

Seung Su Baik and Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

APCTP 2015 Workshop on Frontiers of Physics, Yeosu, South Korea, December 20-23, 2015.

 

349. Tight-binding and first-principles study of giant spin-splitting in solids and nanostructures.

Sehoon Oh and Hyoung Joon Choi,

Poster,

The 9th International Conference on Advanced Materials and Devices, Jeju, South Korea, December 7-9, 2015.

 

348. Development of LDA+DMFT method using non-orthogonal local orbital basis and its application to LaFeAsO.

Mancheon Han, Hyungju Oh, Choong-Ki Lee, and Hyoung Joon Choi,

Poster,

The 9th International Conference on Advanced Materials and Devices, Jeju, South Korea, December 7-9, 2015.

 

347. Massless Dirac fermions in K doped black phosphorus.

Seung Su Baik and Hyoung Joon Choi,

Seminar of Hyoung Joon Choi,

Korea Institute for Advanced Study, Seoul, South Korea, December 3, 2015.

 

346. A mechanism for orbital angular momentum and giant spin-splitting in solids and nanostructures.

Sehoon Oh and Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

International Symposium on Magnetism and Magnetic Materials 2015, Daejeon, South Korea, November 25-27, 2015.

 

345. First-principles studies of Sr2RuxIr1-xO4 near metal-insulator transition.

Eunjung Ko and Hyoung Joon Choi,

Contributed talk of Eunjung Ko

Korean Physical Society Fall Meeting, Gyeongju, South Korea, October 21-23, 2015.

 

344. Implementation of dynamical mean field theory with spin-orbit coupling.

Mancheon Han, Choong-Ki Lee, and Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gyeongju, South Korea, October 21-23, 2015.

 

343. Structural and orbital conditions for giant spin-splitting in solids and nanostructures.

Sehoon Oh and Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gyeongju, South Korea, October 21-23, 2015.

 

342. Superconductivity and antiferromagnetism in iron pnictides and copper oxides.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Fall Meeting, Gyeongju, South Korea, October 21-23, 2015.

 

341. Electronic band structures of bulk and few-layer black phosphorus with GW approximation.

Han-Gyu Kim, Seung Su Baik, and Hyoung Joon Choi,

Contributed talk of Han-Gyu Kim,

Korean Physical Society Fall Meeting, Gyeongju, South Korea, October 21-23, 2015.

 

340. Tight-binding model study of few-layer black phosphorus.

Hyeonjin Doh and Hyoung Joon Choi,

Contributed talk of Hyeonjin Doh,

Korean Physical Society Fall Meeting, Gyeongju, South Korea, October 21-23, 2015.

 

339. Two-dimensional massless Dirac fermions, chiral pseudo-spins, and Berry's phase in potassium doped few-layer black phosphorus.

Seung Su Baik and Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

Korean Physical Society Fall Meeting, Gyeongju, South Korea, October 21-23, 2015.

 

338. LDA+DMFT implementation in a non-orthogonal local orbital basis.

Mancheon Han, Hyungju Oh, Choong-Ki Lee, and Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Spring Meeting, Daejeon, South Korea, April 22-24, 2015.

 

337. The study of orbital angular momentum and spin-splitting in triangular lattice.

Sehoon Oh and Hyoung Joon Choi,

Contributed talk of Sehoon Oh,

Korean Physical Society Spring Meeting, Daejeon, South Korea, April 22-24, 2015.

 

336. Two particle vertex and dynamical mean field theory.

Choong-Ki Lee and Hyoung Joon Choi,

Contributed talk of Choong-Ki Lee,

Korean Physical Society Spring Meeting, Daejeon, South Korea, April 22-24, 2015.

 

335. Quasi-particle band structures of silicon-germanium core-shell nanowires in GW method.

Han-Gyu Kim and Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, April 22-24, 2015.

 

334. Development of a DFT+DMFT method using multi-orbital impurity solver.

Mancheon Han, Hyungju Oh, Choong-Ki Lee, and Hyoung Joon Choi,

Contributed talk of Mancheon Han,

American Physical Society March Meeting, San Antonio, Texas, USA, March 2-6, 2015.

 

333. Effects of the boundary geometry on the edge current in the two dimensional topological insulator.

Hyeonjin Doh and Hyoung Joon Choi,

Contributed talk of Hyeonjin Doh,

American Physical Society March Meeting, San Antonio, Texas, USA, March 2-6, 2015.

 

332. Giant spin-splitting and orbital angular momentum in triangular lattice.

Sehoon Oh and Hyoung Joon Choi,

Contributed talk of Sehoon Oh,

American Physical Society March Meeting, San Antonio, Texas, USA, March 2-6, 2015.

 

331. Tunability of band gap in multilayer phosphorene by external electric fields and electron doping.

Seung Su Baik and Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

American Physical Society March Meeting, San Antonio, Texas, USA, March 2-6, 2015.

 

[2014]

 

330. Density-functional approach for materials with strong magnetic fluctuations.

Hyoung Joon Choi,

Invited talk,

APCTP 2014 Workshop on Frontiers of Physics, Muju, South Korea, December 20-23, 2014.

 

329. Simulation of topological insulators with impurities and defects.

Hyoung Joon Choi,

Invited talk,

International Conference on Electronic Materials and Nanotechnology for Green Environment (ENGE 2014), Jeju, South Korea, November 16-19, 2014.

 

328. Spin-orbit effects in MoS2-WSe2 layered structures.

Sehoon Oh, Seung Su Baik, Hyoung Joon Choi,

Poster,

The 17th Asian Workshop on First-Principles Electronic Structure Calculations, Yonsei University, Seoul, South Korea, November 2-5, 2014.

 

327. Continuous-time quantum Monte Carlo implementation of dynamical mean field theory.

Mancheon Han, Choong-Ki Lee, Hyoung Joon Choi,

Poster,

The 17th Asian Workshop on First-Principles Electronic Structure Calculations, Yonsei University, Seoul, South Korea, November 2-5, 2014.

 

326. Tunneling properties versus electronic structures in Si/SiO2/Si junctions from first principles.

Eunjung Ko, Kwang-Ryeol Lee, Hyoung Joon Choi,

Poster,

The 17th Asian Workshop on First-Principles Electronic Structure Calculations, Yonsei University, Seoul, South Korea, November 2-5, 2014.

 

325. Development of a fully self-consistent DFT+DMFT method in nonorthogonal pseudo-atomic orbital basis.

Mancheon Han, Hyungju Oh, Choong-ki Lee, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 22-24, 2014.

 

324. Electronic structures of silicon and germanium nanowires in the GW approximation.

Han-Gyu Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 22-24, 2014.

 

323. Density functional study of MoS2-WSe2 layered structure.

Sehoon Oh, Seung Su Baik, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 22-24, 2014.

 

322. Metal-gate screening effects on the electron-phonon interactions in high-mobility nanosheet semiconductor MoS2.

Seung Su Baik, Hee Sung Lee, Seongil Im, Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 22-24, 2014.

 

321. Two-dimensional MoS2-based field-effect-transistors (FETs) with graphene and ohmic metal source-drain contacts.

Seung Su Baik, Seongil Im, Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 22-24, 2014.

 

320. Edge transport of the two dimensional topological insulator with cornered boundaries and defects.

Hyeonjin Doh, Hyoung Joon Choi,

Contributed talk of Hyeonjin Doh,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 22-24, 2014.

 

319. First-principles approach for materials with strong magnetic fluctuations.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Fall Meeting, Gwangju, South Korea, October 22-24, 2014.

 

318. Simulation of topological insulators with impurities and defects.

Hyoung Joon Choi,

Seminar,

Physics/SRC/IBS Seminar, Postech, Pohang, South Korea, September 26, 2014.

 

317. Electronic structures and magnetic properties of iron-based superconductors.

Hyoung Joon Choi,

Colloquium,

Department of Physics, Postech, Pohang, South Korea, September 24, 2014.

 

316. Electronic structures and magnetic properties of iron-based superconductors.

Hyoung Joon Choi,

Invited talk,

The 7th Workshop for Emergent Materials Research, Postech, Pohang, South Korea, July 9-11, 2014.

 

315. First-principles simulation of electronic transport in nanostructures: nanowires and single-molecule junctions.

Hyoung Joon Choi,

Invited talk,

Nano Korea 2014, Coex, Seoul, South Korea, July 2-4, 2014.

 

314. First-principles calculation of effects of magnetic impurities on topological surface states.

Hyoung Joon Choi,

Invited talk,

Korea-France Joint Symposium 2014, Ewha Womans University, Seoul, South Korea, June 24-27, 2014.

 

313. Electronic and magnetic properties of iron pnictides and chalcogenides.

Hyoung Joon Choi,

Invited talk,

The 10th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, June 19-20, 2014.

 

312. Density functional studies of topological insulators.

Hyoung Joon Choi,

Invited talk,

TE-TI Workshop, Daegu, South Korea, June 11, 2014.

 

311. Electronic and magnetic properties of iron-based superconductors.

Hyoung Joon Choi,

Invited talk,

The 5th International Workshop on the Dual Nature of f-Electrons, Suwon, South Korea, May 28-31, 2014.

 

310. Density functional studies of Dirac cones in graphyne and gap-opening in graphene.

Hyoung Joon Choi,

Invited talk,

The International Symposium on Carbon Electronics, Seoul National University, Seoul, South Korea, May 8-9, 2014.

 

309. Continuous-time impurity solver implementation for DMFT.

Mancheon Han, Choong-Ki Lee, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-25, 2014.

 

308. First-principles study of MoS2-WSe2 layered structure.

Sehoon Oh, Seung Su Baik, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-25, 2014.

 

307. Computational studies of electronic and magnetic properties of Fe-based superconductors.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-25, 2014.

 

306. Application of dynamical vertex approximation to cuprates.

Choong-Ki Lee, Mancheon Han, Hyoung Joon Choi,

Contributed talk of Choong-Ki Lee,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-25, 2014.

 

305. Development of noncollinear-spin DFT+U method with spin-orbit interaction.

Eunjung Ko, Hyungjun Lee, Hyungju Oh, Se Young Park, Hyoung Joon Choi,

Contributed talk of Eunjung Ko,

American Physical Society March Meeting, Denver, CO, USA, Mar. 3-7, 2014.

 

304. Analytical approach to the edge state of the Kane-Mele model.

Hyeonjin Doh, Gun Sang Jeon, Hyoung Joon Choi,

Contributed talk of Hyeonjin Doh,

American Physical Society March Meeting, Denver, CO, USA, Mar. 3-7, 2014.

 

303. Wavefunction properties and electronic band structures of high-mobility semiconductor nanosheet MoS2.

Seung Su Baik, Hee Sung Lee, Seongil Im, Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

American Physical Society March Meeting, Denver, CO, USA, Mar. 3-7, 2014.

 

302. Analysis of spin-orbit coupling effects in the Pt-Si nanowires on Si(110) surface.

Sehoon Oh, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Sehoon Oh,

American Physical Society March Meeting, Denver, CO, USA, Mar. 3-7, 2014.

 

301. Implementation of DFT+DMFT in local-orbital pseudopotential code.

Hyungju Oh, Choong-Ki Lee, Hyoung Joon Choi,

Contributed talk of Hyungju Oh,

American Physical Society March Meeting, Denver, CO, USA, Mar. 3-7, 2014.

 

300. Development of continuous-time QMC impurity solver for dynamical mean field theory.

Mancheon Han, Choong-Ki Lee, Hyoung Joon Choi,

Contributed talk of Mancheon Han,

American Physical Society March Meeting, Denver, CO, USA, Mar. 3-7, 2014.

 

[2013]

 

299. Development of CT-QMC impurity solver for dynamical mean field theory.

Mancheon Han, Choong-Ki Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

298. Implementation of dynamical mean-field theory in first-principles LCAO calculations.

Hyungju Oh, Choong-Ki Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

297. Electronic and magnetic structures of Ba2IrO4.

Eunjung Ko, Hyoung Joon Choi,

Contributed talk of Eunjung Ko,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

296. Infrared-optical spectroscopy of Bi2Se3 thin films: thickness-dependent study.

Kwangnam Yu, E. J. Choi, Jeong Heum Jeon, Se-Jong Kahng, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Kwangnam Yu,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

295. Magnetic impurities on Bi2Se3 (111) surface and their effects.

Jinhee Han, Hyungjun Lee, Hyeonjin Doh, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

294. Boundary dependent edge states of 2D topological insulator in Kane-Mele model.

Hyeonjin Doh, Hyoung Joon Choi, Gun Sang Jeon,

Contributed talk of Hyeonjin Doh,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

293. Effects of spin-orbit coupling in the Pt-Si nanowires on Si(110) surface.

Sehoon Oh, Hyungjun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

292. Electronic band structures and wavefunction properties of high-mobility nanosheet semiconductor, MoS2.

Seung Su Baik, Hee Sung Lee, Seongil Im, Hyoung Joon Choi,

Contributed talk of Seung Su Baik,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

291. Identifying defects in Bi2Se3 topological insulator from scanning tunneling microscopy and first principles.

Jeong Heum Jeon, Joon-Suh Park, Howon Kim, Won-Jun Jang, Jinhee Han, Hyungjun Lee, Hyoung Joon Choi, Se-Jong Kahng,

Contributed talk of Se-Jong Kahng,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 30 - Nov. 1, 2013.

 

290. First-principles study of effects of magnetic impurities on topological surface states.

Jinhee Han, Hyungjun Lee, Hyeonjin Doh, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

The 16th Asian Workshop on First-Principles Electronic Structure Calculations, Beijing, China, Oct. 27-30, 2013.

 

289. Computational studies of solids and nanostructures based on the density functional theory.

Hyoung Joon Choi,

Seminar,

Pusan National University, Miryang, South Korea, Oct. 18, 2013.

 

288. First-principles studies of electronic and transport properties of nanostructures: core-shell nanowires, graphyne, and topological insulators.

Hyoung Joon Choi,

Seminar,

Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea, Aug. 28, 2013.

 

287. Effects of magnetic impurities on surface states of Sb and Bi2Se3.

Jinhee Han, Hyungjun Lee, Hyeonjin Doh, and Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

2013 Korea-China Symposium on Low Dimensional Electronic and Photonic Materials and Devices, Pusan, South Korea, Aug. 26-30, 2013.

 

286. Density-functional study of the Rashba-type spin splitting for noble-metal surfaces.

Hyoung Joon Choi,

Invited talk,

Spin-Orbit Workshop, KIST, Seoul, South Korea, Aug. 26, 2013.

 

285. Self-energy-corrected scattering-state method for electronic transport in single-molecule junctions.

Hyoung Joon Choi,

Invited talk,

Frontiers of Quantum and Mesoscopic Thermodynamics, Prague, Czech Republic, Jul. 29-Aug. 3, 2013.

 

284. Boundary dependent edge state in Kane-Mele model.

Hyeonjin Doh, Gun Sang Jeon, and Hyoung Joon Choi,

Poster,

Eurasia-Pacific Conference 2013 on Strongly Correlated Electrons, YongPyong Resort, South Korea, Jul. 10-12, 2013.

 

283. Electronic properties of carbon nanotubes with defects.

Hyoung Joon Choi,

Invited talk,

The Chemistry and Physics of Defects in Carbon Nanotubes, Telluride, Colorado, USA, Jul. 8-12, 2013.

 

282. Effects of magnetic impurities on topological surface states.

Hyoung Joon Choi,

Invited talk,

Workshop on New Trends in Topological Insulators, Sant Feliu de Guixols, Spain, Jun. 3-6, 2013.

 

281. Self-energy-corrected scattering-state approach for electronic transport in single-molecule junctions.

Hyoung Joon Choi,

Invited talk,

Physics at the Falls: Recent Progress in Nonequilibrium Quantum Many-Body Theory, the State University of New York at Buffalo, Buffalo, New York, USA, May 16-18, 2013.

 

280. First-principles study on the antiferromagnetic exchange coupling among dopant electrons in Si nanowires.

Chang-Youn Moon, Byoung-Chul Min, Jung Hoon Lee, Joonyeon Chang, Hyoung Joon Choi,

Contributed talk of Chang-Youn Moon,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 24-26, 2013.

 

279. Theoretical study on anisotropic magnetic exchange couplings in iron-based superconductors.

Hyungju Oh, Hyoung Joon Choi,

Contributed talk of Hyungju Oh,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 24-26, 2013.

 

278. Self-energy-corrected scattering-state approach for electronic transport in molecular junctions.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 24-26, 2013.

 

277. Role of d orbitals in the Rashba-type spin splitting for noble-metal surfaces.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 24-26, 2013.

 

276. Development of DFT+U method with spin-orbit interaction.

Eunjung Ko, Hyungjun Lee, Hyungju Oh, Se Young Park, Hyoung Joon Choi,

Contributed talk of Eunjung Ko,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 24-26, 2013.

 

275. Kekule-induced band-gap opening in graphene in contact with ZrO2.

Jung Suk Goh, Hyoung Joon Choi,

Contributed talk of Jung Suk Goh,

American Physical Society March Meeting, Baltimore, Maryland, USA, Mar. 18-22, 2013.

 

274. Density functional study on anisotropic magnetic exchange coupling in iron-based superconductors.

Hyungju Oh, Hyoung Joon Choi,

Contributed talk of Hyungju Oh,

American Physical Society March Meeting, Baltimore, Maryland, USA, Mar. 18-22, 2013.

 

273. Spin-orbit-induced spin-polarized surface states in one-atomic-layer Pb films on Si(111).

Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Hyungjun Lee,

American Physical Society March Meeting, Baltimore, Maryland, USA, Mar. 18-22, 2013.

 

272. Ab initio study of topological surface states of Sb (111) surface with magnetic impurities.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Jinhee Han,

American Physical Society March Meeting, Baltimore, Maryland, USA, Mar. 18-22, 2013.

 

271. Effects of magnetic impurities on Sb (111) surface states.

Hyoung Joon Choi,

Invited talk,

A3 Foresight Program of "Joint Research on Novel Properties of Complex Oxides", University of Tokyo, Tokyo, Japan, Mar. 14-16, 2013.

 

270. Density functional study of the Rashba-type spin splitting for noble-metal surfaces.

Hyoung Joon Choi,

Invited talk,

The Yonsei-Todai Joint Workshop 2013, University of Tokyo, Tokyo, Japan, Feb. 19, 2013.

 

[2012]

 

269. Origins of band-gap opening in graphene in contact with binary insulator.

Jung Suk Goh, Hyoung Joon Choi,

Contributed talk of Jung Suk Goh,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 24-26, 2012.

 

268. Magnetic impurities on Sb (111) surface and their effects on topological surface state.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Jinhee Han,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 24-26, 2012.

 

267. Density-functional study of effects of spin-orbit coupling in Pt-induced nanowires on Si(110).

Sehoon Oh, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Sehoon Oh,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 24-26, 2012.

 

266. Theoretical study of correlation effects in iron-based superconductors.

Hyungju Oh, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 24-26, 2012.

 

265. Spin-orbit induced spin splitting in Pb monolayer on Si(111) surfaces: a first-principles study.

Hyungjun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 24-26, 2012.

 

264. Electronic structures and optical properties of graphene quantum dots: first-principles study.

Min-Kook Kim, Hyoung Joon Choi,

Contributed talk of Min-Kook Kim,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 24-26, 2012.

 

263. First-principles study of topological insulators with defects.

Hyoung Joon Choi,

Invited talk,

2012 Eurasia Pacific Summer School and Conference on Strongly Correlated Electrons, ITAP, Turunc, Turkey, Aug. 6-17, 2012.

 

262. Ab initio study of topological surface state on Sb (111) surface with iron impurities.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Poster,

The 19th International Conference on Magnetism, Bexco, Busan, South Korea, Jul. 8-13, 2012.

 

261. Effect of d-orbital characters of the Fe magnetic moment on the electronic and magnetic properties of BaFe2As2.

Hyungju Oh, Hyoung Joon Choi,

Poster,

The 19th International Conference on Magnetism, Bexco, Busan, South Korea, Jul. 8-13, 2012.

 

260. The Rashba-type spin splitting in Pb monolayer on Si and Ge surfaces: a first-principles study.

Hyungjun Lee, Hyoung Joon Choi,

Poster,

The 19th International Conference on Magnetism, Bexco, Busan, South Korea, Jul. 8-13, 2012.

 

259. Ab initio study of atomic and electronic structure in graphene on ZrO2 (111) surface under pressure.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

The 8th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, Jun. 21-22, 2012.

 

258. First-principles study of Pt-induced wire-like nanostructures on the Si(110) surface.

Sehoon Oh, Hyungjun Lee, Hyoung Joon Choi,

Poster,

The 8th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, Jun. 21-22, 2012.

 

257. Electronic properties of bulk and nano-structures of TiS2 and ZrS2.

Min-Kook Kim, Hyoung Joon Choi,

Poster,

The 8th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, Jun. 21-22, 2012.

 

256. Ab initio study on d-orbital characters of the Fe magnetic moment in BaFe2As2.

Hyungju Oh, Hyoung Joon Choi,

Poster

The 8th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, Jun. 21-22, 2012.

 

255. First-principles study of topological surface states of Sb (111) surface with magnetic impurities.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Poster,

The 8th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, Jun. 21-22, 2012.

 

254. Density-functional study of topological insulators with defects.

Hyoung Joon Choi,

Invited Talk,

The 8th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, Jun. 21-22, 2012.

 

253. First-principles study of Pt-induced nanowires on the Si(110) surface.

Sehoon Oh, Hyungjun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 25-27, 2012.

 

252. Nanometer-scale size dependence of electronic properties of TiS2 and ZrS2: first-principles study

Min-Kook Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 25-27, 2012.

 

251. Theoretical study on superconducting properties of iron-based superconductors based on density-functional theory.

Hyungju Oh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 25-27, 2012.

 

250. Energetics and electronic structures in graphene sandwiched between ZrO2 (111) surfaces: a first-principles study.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 25-27, 2012.

 

249. First-principles study of the role of d orbitals in the Rashba-type splitting on noble metal surfaces.

Hyungjun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 25-27, 2012.

 

248. Effects of magnetic impurities on topological surface states of Sb (111) surface.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 25-27, 2012.

 

247. Computational studies of materials: FeAs and topological insulators.

Hyoung Joon Choi,

Colloquium,

Department of Physics, Ewha Womans University, Seoul, South Korea, Mar. 21, 2012.

 

246. Tailoring IV characteristics and rectification in single-molecule junctions.

Pierre Darancet, Jonathan Widawsky, Hyoung Joon Choi, Latha Venkataraman, Jeffrey Neaton,

Contributed talk of Pierre Darancet,

American Physical Society March Meeting, Boston, Massachusetts, USA, Feb. 27- Mar. 2, 2012.

 

245. First-principles study of orbital-dependent quantum confinement in Si/Ge nanowire superlattices.

Min-Kook Kim, Hyoung Joon Choi,

Contributed talk of Min-Kook Kim,

American Physical Society March Meeting, Boston, Massachusetts, USA, Feb. 27- Mar. 2, 2012.

 

244. The role of d-orbitals in the Rashba splitting on Au(111) and Ag(111).

Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Hyungjun Lee,

American Physical Society March Meeting, Boston, Massachusetts, USA, Feb. 27- Mar. 2, 2012.

 

243. Iron impurities on Sb (111) surface and their effects on topological surface state.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Jinhee Han,

American Physical Society March Meeting, Boston, Massachusetts, USA, Feb. 27- Mar. 2, 2012.

 

242. Density functional study on d-orbital characters of the Fe magnetic moment in BaFe2As2.

Hyungju Oh, Hyoung Joon Choi,

Contributed talk of Hyungju Oh,

American Physical Society March Meeting, Boston, Massachusetts, USA, Feb. 27- Mar. 2, 2012.

 

241. Chiral orbital-angular-momentum and side-surface Dirac cone of topological insulators.

Hyoung Joon Choi,

Invited talk,

CECAM Workshop: Topological Insulators and Non-Perturbative Spin-Orbit Coupling, CECAM Headquarter, EPFL, Lausanne, Switzerland, Jan. 9-11, 2012.

 

240. The role of d-orbitals in the spin-orbit induced splitting in nobel metal surfaces.

Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Hyungjun Lee,

CECAM Workshop: Topological Insulators and Non-Perturbative Spin-Orbit Coupling, CECAM Headquarter, EPFL, Lausanne, Switzerland, Jan. 9-11, 2012.

 

239. First-principles study of topological surface states on Sb (111) surface with iron impurities.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Poster,

CECAM Workshop: Topological Insulators and Non-Perturbative Spin-Orbit Coupling, CECAM Headquarter, EPFL, Lausanne, Switzerland, Jan. 9-11, 2012.

 

[2011]

238. Density-functional studies of bulk and surface electronic structures of topological insulators.

Hyoung Joon Choi,

Seminar,

Institute of High Performance Computing, Singapore, Dec. 8, 2011.

 

237. Computational studies of materials: FeAs, graphene, and topological insulators.

Hyoung Joon Choi,

Colloquium,

Department of Physics, Pusan National University, Pusan, South Korea, Dec. 2, 2011.

 

236. The role of d-orbitals in Rashba-type spin-splitting in noble metal surfaces.

Hyungjun Lee, Hyoung Joon Choi,

Poster,

The 14th Asian Workshop on First-Principles Electronic Structure Calculations, University of Tokyo, Tokyo, Japan, Oct. 31-Nov. 2, 2011.

 

235. Orbital features in electronic and magnetic properties of iron pnictides and chalcogenides.

Hyoung Joon Choi,

Invited talk,

The 14th Asian Workshop on First-Principles Electronic Structure Calculations, University of Tokyo, Tokyo, Japan, Oct. 31-Nov. 2, 2011.

 

234. Density-functional studies of bulk and surface electronic structures of topological insulators.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Fall Meeting, Pusan, South Korea, Oct. 19-21, 2011.

 

233. Epitaxial graphene on Ru (0001) surfaces: first-principles study.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Pusan, South Korea, Oct. 19-21, 2011.

 

232. First-principles study of Rashba spin-orbit splitting in Pb monolayer on semiconductor surfaces.

Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Hyungjun Lee,

Korean Physical Society Fall Meeting, Pusan, South Korea, Oct. 19-21, 2011.

 

231. First-principles study of bulk and atomic layers of TiS2 and ZrS2.

Min-Kook Kim, Hyoung Joon Choi,

Contributed talk of Min-Kook Kim,

Korean Physical Society Fall Meeting, Pusan, South Korea, Oct. 19-21, 2011.

 

230. Effects of iron impurities on topological surface states of Sb (111) surface.

Jinhee Han, Hyoung Joon Choi,

Contributed talk of Jinhee Han,

Korean Physical Society Fall Meeting, Pusan, South Korea, Oct. 19-21, 2011.

 

229. First-principles study on d-orbital characters of the magnetic moment in BaFe2As2.

Hyungju Oh, Hyoung Joon Choi,

Contributed talk of Hyungju Oh,

Korean Physical Society Fall Meeting, Pusan, South Korea, Oct. 19-21, 2011.

 

228. First-principles study of orbital-selective magnetic properties in iron-based superconductors AFe2As2 (A= Ca, Sr, Ba).

Donghan Shin, Hyungju Oh, Hyoung Joon Choi,

Contributed talk of Donghan Shin,

Korean Physical Society Fall Meeting, Pusan, South Korea, Oct. 19-21, 2011.

 

227. First-principles study of atomic and electronic structures of defects in the topological insulator Bi2Se3.

Joon-Suh Park, Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Joon-Suh Park,

Korean Physical Society Fall Meeting, Pusan, South Korea, Oct. 19-21, 2011.

 

226. Self-energy corrected scattering-state approach for electrical and thermal transport properties in nanostructures.

Hyoung Joon Choi,

Invited talk,

APCTP Focus Program on Nonequilibrium Transport in a Mesoscopic System, Postech, South Korea, Sep.15-23, 2011.

 

225. Orbital features in electronic and magnetic properties of Fe-based superconductors.

Hyoung Joon Choi,

Invited talk,

4th Workshop for Emergent Materials Research, Postech, Pohang, South Korea, Jul. 11-13, 2011.

 

224. Review on density-functional studies of iron-based superconductors.

Hyoung Joon Choi,

Invited talk,

APCTP Summer Workshop on Frontiers in Electronic Quantum Matter, Yongpyong, South Korea, Jun. 28-29, 2011.

 

223. Density-functional studies of bulk and surface electronic structures of topological insulators.

Hyoung Joon Choi,

Seminar,

Department of Physics, Sookmyung Women's University, Seoul, South Korea, Jun. 27, 2011

 

222. First-principles calculations of topological insulators.

Hyoung Joon Choi,

Lecture,

The 23rd Workshop on Nanoscale and Mesoscopic Systems "Topological Insulators: The Essential Physics", KIAS, Seoul, South Korea, May 27-28, 2011

 

221. Orbital-selective magnetism in FeAs-based superconductors.

Hyungju Oh, Donghan Shin, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

KIAS Workshop on Frontiers in Condensed Matter Physics, KIAS, Seoul, South Korea, May 9-12, 2011

 

220. Low-velocity anisotropic Dirac fermions on the side surface of topological insulators.

Chang-Youn Moon, Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

KIAS Workshop on Frontiers in Condensed Matter Physics, KIAS, Seoul, South Korea, May 9-12, 2011.

 

219. Domain wall effects on electronic transport in graphene nanoribbons.

Kyung Yeon Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

218. Anisotropic Dirac cone on the side surface of Bi2Se3.

Chang-Youn Moon, Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Chang-Youn Moon,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

217. Effects of minimal perturbation on the low energy band structure in graphene: a tight-binding approach.

Joon-Suh Park, Hyoung Joon Choi,

Contributed talk of Joon-Suh Park,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

216. First-principles study of electronic structures in TiS2 and TiO2.

Min-Kook Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

215. Effects of spin-orbit interaction on the Fermi-surface nesting in iron-based superconductors.

Hyungju Oh, Donghan Shin, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

214. First-principles study of band-gap opening in graphene on ZrO2 (111) surfaces under pressure.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

213. First-principles study of orbital characters in electronic and magnetic properties of iron arsenides AFe2As2 (A=Ca, Eu, Sr, Ba).

Donghan Shin, Hyungju Oh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

212. Electronic structures of Bi2Se3 nanoribbons: a first-principles study.

Hyungjun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

211. First-principles study of chiral orbital angular momentum in topological insulator.

Jinhee Han, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 13-15, 2011.

 

210. Effects of minimal perturbations on the energy-gap opening and the effective mass in graphene.

Joon-Suh Park, Hyoung Joon Choi,

Poster,

Asian Consortium for Computational Materials Science, 3rd Working Group Meeting, Jeju, South Korea, Mar. 31-Apr. 2, 2011.

 

209. Field-induced recovery of massless Dirac fermions in epitaxial graphene on SiC.

Hyungjun Lee, Seungchul Kim, Jisoon Ihm, Young-Woo Son, Hyoung Joon Choi,

Poster,

Asian Consortium for Computational Materials Science, 3rd Working Group Meeting, Jeju, South Korea, Mar. 31-Apr. 2, 2011.

 

208. Single-impurity scattering and carrier mobility in doped Ge/Si core-shell nanowires.

Hyungjun Lee, Hyoung Joon Choi

Poster,

Asian Consortium for Computational Materials Science, 3rd Working Group Meeting, Jeju, South Korea, Mar. 31-Apr. 2, 2011.

 

207. Self-energy corrected scattering-state approach for electrical and thermal transport properties in nanostructures.

Hyoung Joon Choi,

Invited talk,

Asian Consortium for Computational Materials Science, 3rd Working Group Meeting, Jeju, South Korea, Mar. 31-Apr. 2, 2011.

 

206. Electronic structure of the side surface of Bi2Se3.

Chang-Youn Moon, Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Chang-Youn Moon,

American Physical Society March Meeting, Dallas, Texas, USA, Mar. 21-25, 2011.

 

205. First-principles study of orbital-selective magnetism in FeAs-based superconductors.

Hyungju Oh, Donghan Shin, Hyoung Joon Choi,

Contributed talk of Hyungju Oh,

American Physical Society March Meeting, Dallas, Texas, USA, Mar. 21-25, 2011.

 

204. Electric field effects on electronic structures of epitaxial graphene on SiC.

Hyungjun Lee, Seungchul Kim, Jisoon Ihm, Young-Woo Son, Hyoung Joon Choi,

Contributed talk of Hyungjun Lee,

American Physical Society March Meeting, Dallas, Texas, USA, Mar. 21-25, 2011.

 

203. Spatial characters of metallic surface states of topological insulators.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Contributed talk of Jinhee Han,

American Physical Society March Meeting, Dallas, Texas, USA, Mar. 21-25, 2011.

 

202. Efficient k·p method for first-principles calculation of Seebeck coefficient in quantum transport.

David A. Strubbe, Su Ying Quek, Hyoung Joon Choi, J. B. Neaton, Steven G. Louie,

Contributed talk of David A. Strubbe,

American Physical Society March Meeting, Dallas, Texas, USA, Mar. 21-25, 2011.

 

201. First-principles studies of charge dynamics in single-molecule junctions at finite bias.

Pierre Darancet, Hyoung Joon Choi, Jonathan R. Widawsky, Scott Berkley, Latha Venkataraman, Jeffrey B. Neaton,

Contributed talk of Pierre Darancet,

American Physical Society March Meeting, Dallas, Texas, USA, Mar. 21-25, 2011.

 

200. Orbital-selective magnetic moments and interactions in FeAs-based superconductors.

Hyungju Oh, Donghan Shin, Hyoung Joon Choi,

Invited talk of Hyoung Joon Choi,

2011 APCTP Winter Workshop on Frontiers in Electronic Quantum Matter, Postech, Pohang, South Korea, Feb. 16-19, 2011.

 

199. Spatial characters of metallic surface states of topological insulators.

Jinhee Han, Hyungjun Lee, Hyoung Joon Choi,

Poster,

CNRS-Ewha Winter School, Ewha University, Seoul, South Korea, Feb. 7-11, 2011.

 

198. First-principles calculations of electronic structures in topological insulators.

Hyoung Joon Choi,

Invited talk,

CNRS-Ewha Winter School, Ewha University, Seoul, South Korea, Feb. 7-11, 2011.

 

[2010]

197. First-principles study of surface electronic structures of topological insulators.

Jinhee Han, Chang-Youn Moon, Hyungjun Lee, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

RIEC International Symposium, 9th Japan-Korea Symposium on Surface Nanostructures, Sendai, Japan, Nov. 15-16, 2010.

 

196. Electronic structures of graphene in contact with insulators.

Hyoung Joon Choi,

Invited Talk,

Dasan Conference on Graphene Science and Technology, Seogwipo, Jeju, South Korea, Nov. 10-12, 2010.

 

195. Magnetic properties of iron chalcogenides superconductors.

Chang-Youn Moon, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

194. Effect of a magnetic domain wall on electronic transport properties in zigzag graphene nanoribbons.

Kyung Yeon Kim, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

193. First-principles study of metallic surface states of topological insulators.

Jinhee Han, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

192. Theoretic study of magnetic crossover and orbital-dependent effectiveness of Fermi-surface nesting in iron-based superconductors.

Hyungju Oh, Donghan Shin, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

191. First-principles study of electronic structures in graphene on insulating surfaces.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

190. Density functional study of electronic and magnetic structures in FeSexTe1-x.

Jisoo Moon, Chang-Youn Moon, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

189. Density functional study of atomic and electronic structures of iron-based layered superconductor LnFeAsO.

Donghan Shin, Hyungju Oh, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

188. Effects of doping on electronic properties of Si/Ge nanowire superlattices.

Min-Kook Kim, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

187. First-principles study of electric field effects on epitaxial graphene on 4H-SiC(0001).

Hyungjun Lee, Young-Woo Son, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

186. Effects of inter-valley scattering and sub-lattice symmetry breaking on the low-energy band structure in graphene.

Joon-Suh Park, Hyoung Joon Choi,

Poster,

The 13th Asian workshop on first-principles electronic structure calculations, Postech, Pohang, South Korea, Nov 1-3, 2010.

 

185. Electronic structure studies of detwinned BaFe2As2 by photoemission.

Y. K. Kim, Hyungju Oh, Chul Kim, D. J. Song, W. S. Jung, B. Y. Kim, Hyoung Joon Choi, C. Kim, B. S. Lee, S. H. Kim, K. H. Kim, J. B. Hong, Y. S. Kwon, Y. Y. Koh, G. R. Han, W. S. Kyung, H. Y. Choi, Y. G. Boo,

Contributed talk of Y. K. Kim,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

184. Electronic transport properties through magnetic domain wall junctions in zigzag graphene nanoribbons.

Kyung Yeon Kim, Hyoung Joon Choi,

Contributed talk of Kyung Yeon Kim,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

183. First-principles study of surface electronic structures of topological insulators.

Jinhee Han, Hyoung Joon Choi,

Contributed talk of Jinhee Han,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

182. First-principles study of magnetic crossover and orbital-dependent effectiveness of Fermi-surface nesting in iron-based superconductors.

Hyungju Oh, Donghan Shin, Hyoung Joon Choi,

Contributed talk of Hyungju Oh,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

181. Atomic and electronic properties in graphene on insulating substrates.

Jung Suk Goh, Hyoung Joon Choi,

Contributed talk of Jung Suk Goh,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

180. Theoretical study of magnetic ordering in FeSexTe1-x.

Jisoo Moon, Chang-Youn Moon, Hyoung Joon Choi,

Contributed talk of Jisoo Moon,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

179. First-principles calculation of atomic and electronic structures of rare-earth iron oxypnictides.

Donghan Shin, Hyungju Oh, Hyoung Joon Choi,

Contributed talk of Donghan Shin,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

178. Atomic and electronic properties of B and P doped Si/Ge nanowire superlattices: first-principles study.

Min-Kook Kim, Hyoung Joon Choi,

Contributed talk of Min-Kook Kim,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

177. Field-induced recovery of massless Dirac fermions in epitaxial graphene on 4H-SiC(0001): a first-principles study.

Hyungjun Lee, Young-Woo Son, Hyoung Joon Choi,

Contributed talk of Hyungjun Lee,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

176. Effects of inter-valley scattering and sub-lattice symmetry breaking on the energy gap and the effective mass in graphene.

Joon-Suh Park, Hyoung Joon Choi,

Contributed talk of Joon-Suh Park,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

175. Fermi-surface nesting, magnetic ordering, and superconductivity in Fe-based superconductors.

Hyoung Joon Choi,

Invited talk,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

174. The effect of B on chemical states and electronic structures of CoFeB in CoFeB/MgO/CoFeB magnetic tunnel junctions.

Yoonsung Han, Jinhee Han, Hyoung Joon Choi, Hyun-Jun Shin, Jongill Hong,

Invited talk of Jongill Hong,

Korean Physical Society Fall Meeting, Phoenix Park, South Korea, Oct. 20-22, 2010.

 

173. Computational studies of materials and nanostructures.

Hyoung Joon Choi,

Invited talk,

CNRS-Ewha International Research Center Symposium, Ewha Womans University, Seoul, South Korea, Oct. 15, 2010.

 

172. First-principles simulation of single-molecule junctions, semiconductor nanowires, and graphene nanoribbons.

Hyoung Joon Choi,

Seminar,

School of Materials Science and Engineering, GIST, Gwangju, South Korea, Oct. 8, 2010.

 

171. First-principles calculations of electronic structures in graphene and topological insulators.

Hyoung Joon Choi,

Invited talk,

14 "전자정보 신소재 응용기술 " 심포지엄: 21세기 Frontier Science and Technology - Graphene and Topological Insulator, Kyung Hee University, Yongin, South Korea, Oct. 7, 2010.

 

170. Computational studies of materials and nanostructures.

Hyoung Joon Choi,

Colloquium,

Department of Physics, Sungkyunkwan University, Suwon, South Korea, Sep. 17, 2010.

 

169. First-principles study of electronic structures in graphene in contact with insulators.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

30th International Conference on the Physics of Semiconductors, Seoul, South Korea, Jul. 25-30, 2010.

 

168. The effect of magnetic adatoms on transport properties in zigzag GNRs.

Kyung Yeon Kim, Hyoung Joon Choi,

Poster,

30th International Conference on the Physics of Semiconductors, Seoul, South Korea, Jul. 25-30, 2010.

 

167. Resonant scattering, current density loops and induced magnetic fields in carbon nanotubes with a Stone-Wales defect.

Minsung Kim, Youngkuk Kim, Jino Im, Choongki Lee, Jeongwoon Hwang, Juho Lee, Hyoung Joon Choi, Jisoon Ihm,

Contributed Talk of Minsung Kim,

30th International Conference on the Physics of Semiconductors, Seoul, South Korea, Jul. 25-30, 2010.

 

166. FeAs-based superconductors: a brief review.

Hyoung Joon Choi,

Tutorial,

2010 The Korean Superconductivity Society Meeting, Yongpyong, South Korea, Jul. 7-9, 2010.

 

165. First-principles study of surface electronic structures of topological insulator Bi2Se3.

Jinhee Han, Hyoung Joon Choi,

Poster,

2010 APCTP Mini-Workshop on Frontiers in Electronic Quantum Matter, Pyeongchang Alpensia Resort, South Korea, Jul. 5-6, 2010.

 

164. CPA and CDFT study of electronic structure in LaFeAsO.

Jisoo Moon, Hyungju Oh, Hyoung Joon Choi,

Poster,

2010 APCTP Mini-Workshop on Frontiers in Electronic Quantum Matter, Pyeongchang Alpensia Resort, South Korea, Jul. 5-6, 2010.

 

163. Density-functional calculations of rare-earth (RE) dependent electronic structures in REFeAsO.

Hyungju Oh, Donghan Shim, Hyoung Joon Choi,

Poster,

2010 APCTP Mini-Workshop on Frontiers in Electronic Quantum Matter, Pyeongchang Alpensia Resort, South Korea, Jul. 5-6, 2010.

 

162. First-principles study of electronic and magnetic properties in rare-earth iron oxypnictides REFeAsO (RE=Ce, Pr, Nd, Sm, and Gd).

Hyungju Oh, Donghan Shim, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

2010 APCTP Mini-Workshop on Frontiers in Electronic Quantum Matter, Pyeongchang Alpensia Resort, South Korea, Jul. 5-6, 2010.

 

161. First-principles calculations of atomic forces and stress tensors in the LSDA+U formalism.

Se Young Park, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

The 6th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, Jun. 21-22, 2010.

 

160. Variations of ferroelectric off-centering distortion and 3d-4p orbital mixing in La-doped BiFeO3 multiferroics.

Jung-Hoon Lee, Hyoung Joon Choi, Dongeun Lee, Min Gyu Kim, Chung W. Bark, Sangwoo Ryu, Min-Ae Oak, Hyun Myung Jang,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

159. Magnetic properties of iron-based superconductors: first-principles studies.

Chang-Youn Moon, Se Young Park, Hyoung Joon Choi,

Invited Talk of Chang-Youn Moon,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

158. First-principles study of metal silicide/semiconductor nanowire junctions.

Hyungjun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

157. Boron and oxygen impurities in ferromagnetic Fe and Co and their effects on tunnel magnetoresistance.

Jinhee Han, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

156. First-principles study of rare-earth iron oxypnictides REFeAsO (RE=Ce, Pr, Nd, Sm, Gd, Tb, and Dy).

Hyungju Oh, Donghan Shin, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

155. First-principles study of electronic and magnetic properties of zigzag graphene nanoribbons with magnetic adatoms.

Kyung Yeon Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

154. Orbital-dependent quantum confinement in Si/Ge nanowire superlattices.

Min-Kook Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

153. Theoretical study of electronic structures in LaFeAsO: dependence on magnetic moments and ordering.

Jisoo Moon, Hyungju Oh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

152. First-principles study of pressure-dependent band-gap opening in graphene sandwiched between SrCl2 (111) surfaces.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

151. Density-functional study of electronic structures in graphene in contact with insulators.

Jung Suk Goh, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 21-23, 2010.

 

150. Chalcogen-height dependent magnetic interactions in iron chalcogenide superconductors.

Chang-Youn Moon, Hyoung Joon Choi,

Contributed Talk of Chang-Youn Moon,

American Physical Society March Meeting, Portland, Oregon, USA, Mar. 15-19, 2010.

 

149. Fermi surfaces and quantum oscillations in underdoped high-Tc superconductors YBa2Cu3O6.5 and YBa2Cu4O8.

Hyungju Oh, Hyoung Joon Choi, Steven G. Louie, Marvin L. Cohen

Contributed Talk of Hyungju Oh

American Physical Society March Meeting, Portland, Oregon, USA, Mar. 15-19, 2010.

 

148. Density functional study of magnetic ordering and magnetic interactions in FeSexTe1-x superconductors.

Hyoung Joon Choi

Invited Talk

10th Japan-Korea-Taiwan symposium on strongly correlated electron systems, Japan, Mar. 11-13, 2010.

 

147. LSDA+U study of Fermi surfaces and quantum oscillations in underdoped high-Tc superconductors YBa2Cu3O6.5 and YBa2Cu4O8.

Hyungju Oh, Hyoung Joon Choi, Steven G. Louie, Marvin L.Cohen,

Invited Talk of Hyoung Joon Choi,

2010 APCTP-A3 winter school and workshop on frontiers in electronic quantum matter, Phoenix Park, South Korea, Feb. 1-5, 2010.

 

146. Chalcogen-height dependent magnetic ordering in FeSexTe1-x superconductors.

Chang-Youn Moon, Hyoung Joon Choi,

Poster,

2010 APCTP-A3 winter school and workshop on frontiers in electronic quantum matter, Phoenix Park, South Korea, Feb. 1-5, 2010.

 

145. Theoretical study of electronic structures in LaFeAsO using the coherent potential approximation.

Jisoo Moon, Hyungju Oh, Hyoung Joon Choi,

Poster,

2010 APCTP-A3 winter school and workshop on frontiers in electronic quantum matter, Phoenix Park, South Korea, Feb. 1-5, 2010.

 

144. Density functional studies of Fermi surface topology and quantum oscillations in underdoped high-Tc cuprates.

Hyoung Joon Choi,

Seminar,

APCTP, Seoul, South Korea, Jan. 22, 2010.

 

143. Density functional calculations of electronic and magnetic properties of iron pnictides and chalcogenides.

Chang-Youn Moon, Se Young Park, Hyungju Oh, Jisoo Moon, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

International workshop on computational physics and materials science, Fudan University, Shanghai, China, Jan. 7-9, 2010.

 

[2009]

142. Electronic and magnetic properties of iron pnictides and chalcogenides from first-principles calculations.

Chang-Youn Moon, Se Young Park, Hyungju Oh, Jisoo Moon, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

Frontiers in condensed matter physics, KIAS, Seoul, South Korea, Dec. 16-19, 2009.

 

141. First-principles study of electronic and magnetic properties of iron pnictides and chalcogenides.

Chang-Youn Moon, Se Young Park, Hyungju Oh, Jisoo Moon, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

The 12th Asian workshop on first-principles electronic structure calculations, Institute of Physica, CAS, Beijing, China, Oct. 26-28, 2009.

 

140. First-principles study of Fermi surface topology in underdoped High-Tc superconductors.

Hyungju Oh, Hyoung Joon Choi,

Contributed Talk of Hyungju Oh,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 21-23, 2009.

 

139. First-principles study of graphene on insulating substrates.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 21-23, 2009.

 

138. Spin-dependent transport on graphene nanoribbon with magnetic impurities.

Kyung Yeon Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 21-23, 2009.

 

137. First-principles study on the magnetic properties of iron chalcogenide superconductors.

Chang-Youn Moon, Hyoung Joon Choi

Contributed Talk of Chang-Youn Moon

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 21-23, 2009.

 

136. Theoretical study of electronic structures in iron pnictide superconductors using the coherent potential approximation.

Jisoo Moon, Hyoung Joon Choi

Contributed Talk of Jisoo Moon

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 21-23, 2009.

 

135. Effects of boron impurities on transport properties of Fe/MgO/Fe(100) tunnel junctions.

Jinhee Han, Hyoung Joon Choi

Contributed Talk of Jinhee Han

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 21-23, 2009.

 

134. First-principles study of doped and undoped Si/Ge nanowire superlattices.

Min-Kook Kim, Hyoung Joon Choi,

Contributed Talk of Min-Kook Kim,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 21-23, 2009.

 

133. First-principles mobility calculations in doped Si/Ge core-shell nanowires.

Hyungjun Lee, Hyoung Joon Choi,

Contributed Talk of Hyungjun Lee,

Korean Physical Society Fall Meeting, Changwon, South Korea, Oct. 21-23, 2009.

 

132. Electronic structures and transport properties of Si/Ge nanowire-based nanostructures: a first-principles study.

Hyungjun Lee, Min-Kook Kim, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

Japan-Korea Asian Core Program General Meeting: Interdisciplinary Science of Nanomaterials, Sendai, Japan, Sep. 25, 2009.

 

131. Beyond LDA in electronic-transport simulations of single-molecule junctions.

Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

The 5th conference of the asian consortium on computational materials science (ACCMS-5), Hanoi, Vietnam, Sep. 7-11, 2009.

 

130. Beyond LDA in nanometer-scale electronic transport simulations.

Hyoung Joon Choi,

Invited Talk,

JSPS-KOSEF Asian core program, 7th Japan-Korea symposium on surface nanostructures, Sendai, Japan, Jul. 14-16, 2009.

 

129. Theoretical study of magnetoresistance and Hall coefficient in iron arsenides AFe2As2 (A=Ca,Sr, Ba).

Hyungju Oh, Se Young Park, Chang-Youn Moon, Hyoung Joon Choi,

Poster,

8th Asia-Pacific Workshop on Novel Quantum Materials/2nd Workshop for A3 Foresight Program, Yonsei University, Seoul, South Korea, Jul. 5-7, 2009.

 

128. First-principles study of optical absorption spectra of SrFe2As2 and BaFe2As2.

Se Young Park, Chang-Youn Moon, Hyoung Joon Choi,

Poster,

8th Asia-Pacific Workshop on Novel Quantum Materials/2nd Workshop for A3 Foresight Program, Yonsei University, Seoul, South Korea, Jul. 5-7, 2009.

 

127. Local moment interaction vs. Fermi surface nesting in the magnetic ordering in iron pnictides.

Chang-Youn Moon, Se Young Park, Hyoung Joon Choi,

Poster,

8th Asia-Pacific Workshop on Novel Quantum Materials/2nd Workshop for A3 Foresight Program, Yonsei University, Seoul, South Korea, Jul. 5-7, 2009.

 

126. Comparative study of local-moment interaction and Fermi-surface nesting in various iron pnictides.

Chang-Youn Moon, Se Young Park, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

The 5th KIAS electronic structure calculation workshop, KIAS, Seoul, South Korea, Jun. 18-19, 2009.

 

125. Ab initio study of quantum conductance in doped Si/Ge core-shell nanowires.

Hyung Jun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-24, 2009.

 

124. Semiclassical theory of magnetoresistance and Hall coefficient in iron arsenides AFe2As2 (A=Ca, Sr, Ba).

Hyungju Oh, Se Young Park, Chang-Youn Moon, Hyoung Joon Choi, 

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-24, 2009.

 

123. Optical absorption properties of iron arsenides AFe2As2 (A=Ca, Sr, Ba): a first-principles study.

Se Young Park, Chang-Youn Moon, Hyoung Joon Choi, 

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-24, 2009.

 

122. Negative tunneling magnetoresistance in ferromagnet/half-metal junctions.

Kyung Yeon Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-24, 2009.

 

121. First-principles study of boron impurities in MgO.

Jinhee Han, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-24, 2009.

 

120. Confinement effect in Si/Ge nanowire superlattices: first-principles study.

Min-Kook Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-24, 2009.

 

119. Comparative study on the physical properties of various iron pnictides from density-functional calculations.

Chang-Youn Moon, Se Young Park, Hyoung Joon Choi,

Contributed Talk of Chang-Youn Moon,

Korean Physical Society Spring Meeting, Daejeon, South Korea, Apr. 23-24, 2009.

 

118. First-principles study of atomic, electronic, and magnetic properties of iron pnictides.

Hyoung Joon Choi,

Invited Talk,

Frontiers in Condensed Matter Physics and Nanoscience: A symposium in honor of the 60th birthday of Steven G. Louie, University of California, Berkeley, CA, USA, Mar. 21-22, 2009.

 

117. Reversible, mechanically-activated switching in pyridine single molecule junctions.

Maria Kamenetska, Su Ying Quek, Michael L. Steigerwald, Hyoung Joon Choi, Steven G. Louie, Mark S. Hybertsen, J. B. Neaton, Latha Venkataraman,

American Physical Society March Meeting, Pittsburgh, PA, USA, 2009.

 

116. First-principles studies of single-molecule junctions: conductance and mechanically-controlled switching.

Su Ying Quek, Hyoung Joon Choi, Steven G. Louie, Mark S. Hybertsen, Latha Venkataraman, J. B. Neaton,

American Physical Society March Meeting, Pittsburgh, PA, USA, 2009.

 

115. Spin-dependent electronic transport in Fe/MnAs/Fe structures.

Kyung-Yeon Kim, Hyoung Joon Choi,

Contributed talk of Kyung-Yeon Kim,

American Physical Society March Meeting, Pittsburgh, PA, USA, 2009.

 

114. First-principles study of local p(2x2) structures on Si(100) surface.

Min-Kook Kim, Hyoung Joon Choi,

Contributed talk of Min-Kook Kim,

American Physical Society March Meeting, Pittsburgh, PA, USA, 2009.

 

113. Ab initio study of electric field effects on electronic structures of epitaxial graphene on silicon carbide.

Hyungjun Lee, Young-Woo Son, Hyoung Joon Choi,

Poster,

APCTP 2009 Winter Workshop on Frontiers in Electronic Quantum Matter: Pnictide and Cuprate High Temperature Superconductors through Graphene, Hilton Namhae Resort, South Korea, Feb. 8-12, 2009.

 

112. First-principles study of atomic and electronic properties of graphene on metal (Ru, Pt) slabs.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

APCTP 2009 Winter Workshop on Frontiers in Electronic Quantum Matter: Pnictide and Cuprate High Temperature Superconductors through Graphene, Hilton Namhae Resort, South Korea, Feb. 8-12, 2009.

 

111. Comparative study on the physical properties of various iron pnictides from first-principles calculations.

Chang-Youn Moon, Se Young Park, Hyoung Joon Choi,

Poster,

APCTP 2009 Winter Workshop on Frontiers in Electronic Quantum Matter: Pnictide and Cuprate High Temperature Superconductors through Graphene, Hilton Namhae Resort, South Korea, Feb. 8-12, 2009

 

110. First-principles calculation of atomic force and stress tensor in the LSDA+U formalism.

Se Young Park, Hyoung Joon Choi,

Poster,

APCTP 2009 Winter Workshop on Frontiers in Electronic Quantum Matter: Pnictide and Cuprate High Temperature Superconductors through Graphene, Hilton Namhae Resort, South Korea, Feb. 8-12, 2009.

 

109. First-principles study of atomic, electronic, and magnetic properties of iron pnictides.

Chang-Youn Moon, Se Young Park, Hyoung Joon Choi,

Invited Talk of Hyoung Joon Choi,

APCTP 2009 Winter Workshop on Frontiers in Electronic Quantum Matter: Pnictide and Cuprate High Temperature Superconductors through Graphene, Hilton Namhae Resort, South Korea, Feb. 8-12, 2009.

 

[2008]

108. Electronic structures of graphene on SiC and graphene on metal surfaces.

Hyoung Joon Choi,

Invited Talk,

Inauguration Symposium, Quantum Metamaterials Research Center, Ewha University, Seoul, South Korea, Dec. 10, 2008.

 

107. First-principles study of electronic and superconducting properties of FeAs superconductors.

Hyoung Joon Choi,

Invited Talk,

A3 Foresight Program,Fudan University, Shanghai, China, Dec. 7-9, 2008.

 

106. Atomic, electronic, and magnetic properties of parent compounds of superconducting iron pnictides.

Chang-Youn Moon, Se Young Park, Hyoung Joon Choi,

Invited Talk of Chang-Youn Moon,

The 11th Asian Workshop on First-Principles Electronic Structure Calculations, The National Sun Yat-sen University, Kaohsiung, Taiwan, Nov. 3-5, 2008.

 

105. New superconductors: FeAs compound families.

Hyoung Joon Choi,

Colloquium,

Department of Physics, Inha University, Incheon, South Korea, Nov. 13, 2008.

 

104. First-principles study of boron impurities in MgO.

Jinhee Han, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gwangju, South Korea, 2008.

 

103. First-principles study of atomic and electronic properties of graphene on metal (Ru, Pt) slabs.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gwangju, South Korea, 2008.

 

102. First-principles study on structural properties of iron-based superconducting compounds.

Se Young Park, Chang-Youn Moon, Hyoung Joon Choi,

Korean Physical Society Fall Meeting, Gwangju, South Korea, 2008.

 

101. Electronic transport in Fe/MnAs/Fe structures.

Kyung Yeon Kim, Hyoung Joon Choi,

Korean Physical Society Fall Meeting, Gwangju, South Korea, 2008.

 

100. First-principles study of local p(2x2) structures on Si(100) surface.

Min-Kook Kim, Hyoung Joon Choi

Korean Physical Society Fall Meeting, Gwangju, South Korea, 2008.

 

99. Ab initio study of point defects in Si/Ge core-shell nanowires.

Hyung Jun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Gwangju, South Korea, 2008.

 

98. Enhanced spin density wave in LaOFeSb.

Chang-Youn Moon, Se Young Park, Hyoung Joon Choi,

Korean Physical Society Fall Meeting, Gwangju, South Korea, 2008.

 

97. A LDA+U study of ortho-II YBa2Cu3O6.5.

Hyungju Oh, Hyoung Joon Choi, 

Poster,

Korean Physical Society Fall Meeting, Gwangju, South Korea, 2008.

 

96. Atomic and electronic structures of epitaxial graphene on SiC.

Hyoung Joon Choi, 

Invited talk,

The 7th Korea Conference on Innovative Science and Technology: Electronic properties of carbon based materials, Phoenix Park, South Korea, Oct. 18-21, 2008.

 

95. Origins of anomalous electronic structures of epitaxial graphene on SiC.

Hyoung Joon Choi,

Invited Talk,

JSPS-KOSEF Asian core program, 5th Japan-Korea symposium on surface nanostructures, Sendai, Japan, Sep. 17-19, 2008.

 

94. Atomic and electronic structures of iron pnictides: first-principles calculations.

Hyoung Joon Choi,

Invited Talk,

APCTP FeAs Superconductivity workshop, KAIST, Daejeon, South Korea, Sep. 6, 2008.

93. Density functional calculations of atomic and electronic structures of LaOFeSb.

Hyoung Joon Choi,

Seminar,

Gangnam Branch, APCTP, Seoul, South Korea, Aug. 22, 2008.

 

92. First-principles simulation of electronic transport in nanostructures.

Hyoung Joon Choi,

Invited Talk,

APCTP focus program, Pohang, South Korea, Aug. 19, 2008.

 

91. LDA+U study of atomic forces in NiO.

Seyoung Park, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, 2008.

 

90. Electric field effects on atomic and electronic structures of epitaxial graphene on SiC: a first-principles study.

Hyung Jun Lee, Young-Woo Son, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, 2008.

 

89. First-principles study of topological defects on clean Si(100) surface.

Min-Kook Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, 2008.

 

88. First-principle study of half-metallicity in Fe/MnAs/Fe.

Kyoung-Yeon Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, 2008.

 

87. Simulation of STM images and ARPES spectra of graphene on Au and Ti surfaces.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, 2008.

 

86. Theoretical study of electronic structures in Ca2-xSrxRuO4 with the dynamical mean-field theory.

Hyungju Oh, Hyoung Joon Choi,

Poster,

Korean Physical Society Spring Meeting, Daejeon, South Korea, 2008.

 

85. Origins of anomalous electronic structures of epitaxial graphene on SiC.

Hyoung Joon Choi,

49th Shinchon Workshop, Yonsei University, Seoul, Korea, 2008.

 

84. Simulation of electrical conduction in nanometer-scale systems.

Hyoung Joon Choi, 

Colloquium,

Department of Physics, Chonbuk National University, Jeonju, South Korea, 2008.

 

83. Tunneling properties of ultra-thin SiO2 barriers: a first-principles study.

Eunjung Ko, Hyoung Joon Choi,

American Physical Society March Meeting, New Orleans, LA, USA 2008.

 

82. Ab initio study on atomic and electronic structures of epitaxial graphene.

Seungchul Kim, Jisoon Ihm, Hyoung Joon Choi, Young-Woo Son,

American Physical Society March Meeting, New Orleans, LA, USA 2008.

 

81. Ab initio studies of electronic transport through amine-Au-linked junctions of photoactive molecules.

David A. Strubbe, Su Ying Quek, Latha Venkataraman, Hyoung Joon Choi, Jeffrey B. Neaton, Steven G. Louie,

American Physical Society March Meeting, New Orleans, LA, USA 2008.

 

80. Quasiparticle gaps of nanostructures weakly-coupled to their environment: the case of C60/metal interfaces.

Jay Sau, Jeffrey B. Neaton, Hyoung Joon Choi, Steven G. Louie, Marvin L. Cohen,

American Physical Society March Meeting, New Orleans, LA, USA 2008.

 

79. Strong orbital-dependent d-band hybridization and Fermi surface reconstruction in metallic Ca2-xSrxRuO4.

Hyoung Joon Choi, 

Invited talk,

The 12th APCTP winter workshop on strongly correlated electron systems, APCTP, Pohang, South Korea, 2008.

 

[2007]

78. Origins of anomalous electronic structures of epitaxial graphene on silicon carbide.

Hyoung Joon Choi,

Graphene Research Seminar, KIAS, Seoul, South Korea, 2007.

 

77. First-principles simulation of electronic transport in nanostructures.

Hyoung Joon Choi,

Seminar,

School of Computer Science, Kookmin University, Seoul, South Korea, 2007.

 

76. Tunneling properties of ultra-thin SiO2 barriers: a first-principles study.

Eunjung Ko, Hyoung Joon Choi,

Korean Physical Society Fall Meeting, Jeju, South Korea, 2007.

 

75. First-principles calculation of atomic force and stress tensor in the LDA+U formalism.

Seyoung Park, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Jeju, South Korea, 2007.

 

74. Implementation of spin-orbit coupling in first-principles LCAO calculations.

Hyung Jun Lee, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Jeju, South Korea, 2007.

 

73. Atomic and electronic structures of silicon surface with defects: a first-principles study.  

Min-Kook Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Jeju, South Korea, 2007.

 

72. First-principle study of atomic and electronic structures of MnAs.

Kyoung-Yeon Kim, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Jeju, South Korea, 2007.

 

71. First-principles study of atomic and electronic structures of graphene-metal contacts.

Jung Suk Goh, Hyoung Joon Choi,

Poster,

Korean Physical Society Fall Meeting, Jeju, South Korea, 2007.

 

70. First-principles simulation of magnetoresistance of magnetic tunnel junctions.

Hyoung Joon Choi,

Japan-Korea Asian Core Program General Meeting: Interdisciplinary Science of Nanomaterials, Matsushima, Japan, 2007.

 

69. First-principles simulation of magnetoresistance of magnetic tunnel junctions.

Hyoung Joon Choi,

The 4th Conference of the Asian Consortium on Computational Materials Science, KIST, Seoul, South Korea, 2007.

 

68. Tunneling properties of ultra-thin SiO2 barriers: a first-principles study.

Eunjung Ko, Hyoung Joon Choi,

Poster,

The 4th Conference of the Asian Consortium on Computational Materials Science, KIST, Seoul, South Korea, 2007.

 

67. Strong orbital-dependent d-band hybridization and Fermi surface reconstruction in metallic Ca2-xSrxRuO4.

Hyoung Joon Choi,

1st Yonsei-Todai joint workshop on physics, The University of Tokyo, Tokyo, Japan, 2007.

 

66. First-principles calculation of the tunneling properties of ultra-thin SiO2 barriers.

Hyoung Joon Choi,

Invited talk,

3rd Japan-Korea Symposium on Surface Nanostructures, JSPS-KOSEF Asian Core Program, Japan, 2007.

 

65. Superconductivity in compressed and doped MgB2.

Hyoung Joon Choi,

Invited talk,

The 3rd KIAS Electronic Structure Calculation Workshop, KIAS, Seoul, South Korea, 2007.

 

64. Simulation of electrical conduction in nanometer-scale systems.

Hyoung Joon Choi, 

Colloquium,

Department of Physics, Chungnam National University, Daejeon, South Korea, 2007.

 

63. Superconductivity in compressed and doped MgB2.

Hyoung Joon Choi,

Invited talk,

The Korean Superconductivity Society 2007 Spring Workshop, KRISS, Daejeon, South Korea, 2007.

 

62. Strong orbital-dependent d-band hybridization and Fermi surface reconstruction in metallic Ca2-xSrxRuO4.

Eunjung Ko, B. J. Kim, C. Kim, Hyoung Joon Choi,

American Physical Society March Meeting, Denver, CO, USA 2007.

 

[2006]

61. First-principles simulation of electronic transport in nanostructures.

Hyoung Joon Choi,

Invited talk,

Yonsei-Tohoku Korea-Japan Asian Core Program General Symposium, Yonsei University, Seoul, South Korea, 2006.

 

60. Strong orbital-dependent d-band hybridization and Fermi surface reconstruction in metallic Ca2-xSrxRuO4.

Hyoung Joon Choi,

Invited talk,

The 9th Asian Workshop on First-Principles Electronic Structure Calculations, KIAS, Seoul, South Korea, 2006.

 

59. Effect of RuO6 rotation on the electronic structures of metallic Ca2-xSrxRuO4.

Eunjung Ko, B. J. Kim, C. Kim, Hyoung Joon Choi,

The 10th Anniversary Workshop of APCTP, Strongly Correlated Electron System, APCTP, Pohang, South Korea, 2006.

 

58. First-principles calculation of the tunneling properties of ultra-thin SiO2 barriers.

Eunjung Ko, Hyoung Joon Choi,

The Korean Institute of Metals and Materials, Fall Conference, Jeju, South Korea, 2006.

 

57. Effects of RuO6 rotation on the electronic structures of metallic Ca2-xSrxRuO4.

Eunjung Ko, B. J. Kim, C. Kim, Hyoung Joon Choi,

Korean Physical Society Fall Meeting, Daegu, South Korea, 2006.

 

56. Simulation of electrical conduction in nanometer-scale systems.

Hyoung Joon Choi, 

Colloquium,

Department of Physics, Postech, Pohang, South Korea, 2006.

 

55. Electrical switching in metallic carbon nanotubes.

Y.-W. Son, J. Ihm, M. L. Cohen, S. G. Louie, H. J. Choi,

Americal Physical Society March Meeting, Baltimore, MD, USA, 2006.

 

54. Constrained LDA ab-initio calculation of screening of charging energy in C60.

J. Sau, J. Neaton, K. H. Khoo, H. J. Choi, S. G. Louie, M. L. Cohen,

American Physical Society March Meeting, Baltimore, MD, USA, 2006.

 

[2005]

53. Electrical switching in metallic carbon nanotubes.

H. J. Choi,

45th Shinchon Workshop, Sogang University, Seoul, South Korea, 2005.

 

52. Quantum conductance of carbon nanotubes.

H. J. Choi,

Colloquium,

Department of Physics, Yonsei University, Seoul, South Korea, 2005.

 

51. Phonon-induced energy shift and lifetime broadening of electronic states in solids.

H. J. Choi,

Invited lecture,

APCTP Summer School on Strongly Correlated Electron Systems, Pohang, South Korea, 2005.

 

50. Structures and electronic structures of K3C60 monolayers.

H. J. Choi, S. G. Louie, M. L. Cohen,

16th Annual Workshop on Recent Developments in Electronic Structure Methods, Cornell University, Ithaca, NY, USA, 2005.

 

49. Structures and electronic structures of potassium-doped C60 monolayers.

H. J. Choi,

2nd KIAS Workshop on Electronic Structure Calculations, Seoul, South Korea, 2005.

 

48. Structures and electronic structures of potassium-doped C60 monolayers.

H. J. Choi,

Invited talk,

4th Asia-Pacific Workshop on Strongly Correlated Systems, Beijing, China, 2005.

 

[2004]

47. First-principles calculation of nonlinear electrical transport in nanostructures.

H. J. Choi,

Seminar,

Chonnam National University, Kwangju, South Korea, 2004.

 

46. Structures and electronic structures of K3C60 monolayers.

H. J. Choi, S. G. Louie, M. L. Cohen,

7th Asian Workshop on First-Principles Electronic Structure Calculations, Tamkang University, Taipei, Taiwan, 2004.

 

45. First-principles simulation of electrical transport in nanostructures.

H. J. Choi, 

Invited talk,

Korean-German Science and Technology Forum, Seoul, South Korea, 2004.

 

44. Structures and electronic structures of potassium-doped C60 monolayers.

H. J. Choi,

Invited talk,

Korea Supercomputing Workshop, KISTI, Taejon, South Korea, 2004.

 

43. Anisotropic Eliashberg theory of MgB2.  

H. J. Choi,

Invited talk,

The Korean Superconductivity Society Meeting, Yongpyong, South Korea, 2004.

 

42. Anisotropic Eliashberg theory of MgB2.

H. J. Choi,

Invited talk,

Korean Physical Society Spring Meeting, South Korea, 2004.

 

41. First-principles scattering-state approach to nonlinear electrical transport in nanostructures.

H. J. Choi, M. L. Cohen, S. G. Louie,

American Physical Society March Meeting, Montreal, Quebec, Canada, 2004.

 

40. Nonlinear quantum transport through carbon nanostructures and molecules from first principles.

J. B. Neaton, K. H. Khoo, H. J. Choi, S. G. Louie,

American Physical Society March Meeting, Montreal, Quebec, Canada, 2004.

 

39. Theoretical study on nonequilibrium charge transport through single organic molecules.

Y.-W. Son, H. J. Choi, S. G. Louie, M. L. Cohen, J. Ihm,

Americal Physical Society March Meeting, Montreal, Quebec, Canada, 2004.

 

38. Anisotropic Eliashberg theory of MgB2.

H. J. Choi,

Invited talk,

8th APCTP Winter Workshop on Strongly Correlated Electron Systems, Phoenix Park, South Korea, 2004.

 

37. Quantum conductance in nanostructures.

H. J. Choi,

Special lecture,

KIAS-SNU Physics Winter Camp, Korea Institute for Advanced Study, Seoul, South Korea, 2004.

 

[2003]

36. Nonlinear electronic transport in nanostructures.

H. J. Choi,

Invited talk,

6th Asian Workshop on First-Principles Electronic Structure Calculations, Tsukuba, Japan, 2003.

 

35. Quantum conductance of defective carbon nanotubes under transverse electric field.

Y.-W. Son, H. J. Choi, J. Ihm,

6th Asian Workshop on First-Principles Electronic Structure Calculations, Tsukuba, Japan, 2003.

 

34. Nonequilibrium charge transport through single organic molecules.

Y.-W. Son, H. J. Choi, S. G. Louie, M. L. Cohen, J. Ihm,

Korean Physical Society Fall Meeting, Daegu, South Korea, 2003.

 

33. Quantum conductance of defective double-wall carbon nanotube under transverse electric field.

Y.-W. Son, Y. Cho, C.-K. Lee, J. Ihm, H. J. Choi,

Korean Physical Society Fall Meeting, Daegu, South Korea, 2003.

 

32. Multi-gap superconductivity in MgB2.

H. J. Choi,

Seminar,

Department of Physics, Pohang University of Science and Technology, Pohang, South Korea, 2003.

 

31. Superconductivity of MgB2 from first principles.

H. J. Choi,

Seminar,

Quantum Photonic Science Research Center, Hanyang University, Seoul, South Korea, 2003.

 

30. Multi-gap superconductivity in MgB2.

H. J. Choi,

Seminar,

Department of Physics, Korea Advanced Institute of Science and Technology, Taejon, South Korea, 2003.

 

29. First-principles study of superconductivity in MgB2.

H. J. Choi,

Special Condensed Matter Physics Seminar,

Department of Physics, Sungkyunkwan University, Suwon, South Korea, 2003.

 

28. First-principles study of superconductivity in MgB2.

H. J. Choi,

CTP seminar, Department of Physics, Seoul National University, Seoul, South Korea, 2003.

 

27. First-principles study of superconductivity in MgB2.

H. J. Choi,

Seminar,

Computational Sciences, Korea Institute for Advanced Study, Seoul, South Korea, 2003.

 

26. Physical understanding of the anomalous superconducting properties in MgB2.

H. J. Choi,

Colloquium,

Department of Physics, Yonsei University, Seoul, South Korea, 2003.

 

25. First-principles study of superconductivity in MgB2.

H. J. Choi,

Special Condensed Matter Physics Seminar,

Department of Physics, University of California, San Diego, California, USA, 2003.

 

24. Electronic conduction in nanostructures: first-principles study.

H. J. Choi,

Solid State and Optics Seminar,

Department of Applied Physics, Yale University, New Haven, Connecticut, USA, 2003.

 

23. Multi-gap superconductivity in MgB2.

H. J. Choi,

Invited talk,

American Physical Society March Meeting, Austin, TX, USA, 2003.

 

22. First-principles study of superconductivity in MgB2.

H. J. Choi,

Seminar,

Physics and Astronomy Department, University of British Columbia, Vancouver, Canada, 2003.

 

[2002]

21. First-principles study of superconductivity in MgB2.

H. J. Choi,

290k Seminar,

Department of Physics, University of California, Berkeley, California, USA, 2002.

 

20. Superconductivity of MgB2 from first principles.

H. J. Choi,

Invited talk,

Fourteenth Annual Workshop on Recent Developments in Electronic Structure Methods, Berkeley, California, USA, 2002.

 

19. First-principles study of the superconducting transition, superconducting energy gaps, low temperature specific heat, and quasiparticle spectra in MgB2.

H. J. Choi, D. Roundy, H. Sun, M. L. Cohen, S. G. Louie,

American Physical Society March Meeting, Indianapolis, IN, USA, 2002.

 

18. Superconductivity of MgB2 from first-principles.

H. J. Choi,

Solid State and Optics Seminar,

Department of Applied Physics, Yale University, New Haven, Connecticut, USA, 2002.

 

[2001]

17. Electronic transport and structure in carbon nanotube junctions.

H. J. Choi, J. Ihm, Y.-G. Yoon, S. G. Louie, M. L. Cohen,

International Workshop on the Science and Application of Nanotubes, Potsdam, Germany, 2001.

 

16. Electronic transport in carbon nanotube junctions.

H. J. Choi, J. Ihm, Y.-G. Yoon, S. G. Louie, M. L. Cohen,

American Physical Society March Meeting, Seattle, WA, USA, 2001.

 

15. First principle pseudopotential calculation of the pressure dependence of the electronic properties of MgB2.

H. Sun, D. Roundy, H. J. Choi, S. G. Louie, M. L. Cohen,

American Physical Society March Meeting, Seattle, WA, USA, 2001.

 

14. Ab initio calculations of the phonon frequencies, Gruneisen constants, and electron-phonon coupling in MgB2.

D. Roundy, H. J. Choi, H. Sun, S. G. Louie, M. L. Cohen,

American Physical Society March Meeting, Seattle, WA, USA, 2001.

 

[2000]

13. The conductance of carbon nanotubes contacted with liquid metals.

H. J. Choi, 

Invited talk,

Korean Physical Society Spring Meeting, South Korea, 2000.

 

12. Contact resistance of carbon nanotubes and metals.

H. J. Choi, J. Ihm, Y.-G. Yoon, S. G. Louie,

American Physical Society March Meeting, Minneapolis, MN, USA, 2000.

 

11. First-principles study of intertube conductance of crossed carbon nanotube junctions.

Y.-G. Yoon, M. Mazzoni, S. G. Louie, H. J. Choi, J. Ihm,

American Physical Society March Meeting, Minneapolis, MN, USA, 2000.


10. Contact resistance of carbon nanotubes and metals.

H. J. Choi, J. Ihm,

Invited talk,

The 10th Symposium on Theoretical Solid State Physics, Taejon, South Korea, 2000.

 

[1999]

9. First-principles study of the effects of impurities and defects on the conductance of carbon nanotubes.

H. J. Choi, J. Ihm,

2nd Korea-Japan Joint Workshop on Electronic Structure Calculations, Seoul, South Korea, 1999.

 

8. Conductance of capped carbon nanotubes.

J. H. Lee, H. J. Choi, J. Ihm,

Korean Physical Society Fall Meeting, South Korea, 1999.

 

7. A numerical study on the magnetoresistance of carbon nanotubes in the weak localization regime.

T. J. Sung, H. J. Choi, J. Ihm,

Korean Physical Society Fall Meeting, South Korea, 1999.

 

6. Ab initio calculation for the conductance of carbon nanotubes with defects.

H. J. Choi, J. Ihm,

American Physical Society March Meeting, Atlanta, Georgia, USA, 1999.

 

[1998]

5. The effect of local defects on the conductance of the carbon nanotube.

H. J. Choi, J. Ihm,

International Workshop on Semiconductor Quantum Structures, Cheju, South Korea, 1998.

 

4. The quantum conductance of the carbon nanotube with a local defect.

H. J. Choi, J. Ihm,

APCTP-ICTP Joint International Conference, Seoul, South Korea, 1998.

 

3. Pseudogap in ropes of (10,10) carbon nanotubes.

P. Delany, S. G. Louie, M. L. Cohen, J. Ihm, H. J. Choi,

American Physical Society March Meeting, Los Angeles, CA, USA, 1998.

 

[1997]

2. Short-range-order effect on the tunneling of the GaAs heavy hole in GaAs/AlxGa1-xAs/GaAs single barrier structures.

H. J. Choi, J. Ihm,

American Physical Society March Meeting, Kansas City, Missouri, USA, 1997.

 

1. Short-range-order effect on the tunneling of the GaAs heavy hole in GaAs/AlxGal-xAs/GaAs single barrier structures.

H. J. Choi, J. Ihm,

The 7th Symposium on Theoretical Solid State Physics, Taejon, South Korea, 1997.