2024. 03. 20. Colloquium - Twisted two-dimensional materials (Prof. Hyoung Joon Choi)
- 양자물질초전도체창의연구소
- Hit45151
- 2024-03-20
Title : Twisted two-dimensional materials
Speaker : Prof. Hyoung Jun Choi, Department of Physics, Yonsei University (최형준 교수님, 연세대학교 물리학과)
Date & Time : Mar. 20 (Wed.) 2024, 16:30
Place : Natural Science 1, Room No. 31214
Abstract :
Twisted layers of two-dimensional materials such as graphene and transition-metal dichalcogenides have emerged as a new platform of novel electronic structures. Since they have large moire supercells typically, it becomes a challenge to perform accurate theoretical calculations of their electronic structures. Here, we present atomistic approaches to atomic and phononic structures of twisted graphene layers [1-3] and twisted transition-metal dichalcogenide layers [4-5], and discuss their atomic, electronic, and phononic properties [1-5].
[1] Y. W. Choi and H. J. Choi, Phys. Rev. B 98, 241412 (2018).
[2] Y. W. Choi and H. J. Choi, Phys. Rev. B 100, 201402 (2019).
[3] Y. W. Choi and H. J. Choi, Phys. Rev. Lett. 127, 167001 (2018).
[4] S. Y. Lim, H. -g. Kim, Y. W. Choi, T. Taniguchi, K. Watanabe, H. J. Choi, and H. Cheong, ACS Nano 17, 13938 (2023).
[5] S. Oh, H. -g. Kim, J. Kim, H. Jeong, H. J. Choi, and H. Cheong, 2D Materials 11, 025004 (2024).
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