Computational studies of twisted two-dimensional materials

Hyoung Joon Choi

Department of Physics, Yonsei University, Seoul, Korea

2024년 12월 12일  목요일 16:00
자연대 c동 335호 

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 moiré 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 (2021). 

[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).