학술논문
ARPES study of twist-angle dependent electronic states in twisted bilayer graphene / ツイスト角に依存したツイストグラフェン電子状態のARPESによる研究
Document Type
Journal Article
Author
Anton Visikovskiy; Ayumi Harasawa; Fumio Komori; Hitoshi Imamura; Kan Nakatsuji; Kazuhiko Mase; Koichiro Yaji; Koji Horiba; Miho Kitamura; Ryosuke Uotani; Satoru Tanaka; Takashi Kajiwara; Takuma Hattori; Takushi Iimori; Toshio Miyamachi; Visikovskiy Anton; 中辻 寛; 今村 均; 北村 未歩; 原沢 あゆみ; 堀場 弘司; 宮町 俊生; 小森 文夫; 服部 琢磨; 梶原 隆司; 田中 悟; 矢治 光一郎; 間瀬 一彦; 飯盛 拓嗣; 魚谷 亮介
Source
Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science. 2020, :132
Subject
Language
Japanese
ISSN
2434-8589
Abstract
Twisted bilayer graphene is a stack of two graphene sheets that rotate in-plane with each other, and exhibits an electronic state different from that of usual Bernal-stack bilayer graphene. Analysis of the two-dimensional band mapping by ARPES revealed that the Dirac velocity decreases anisotropically with the decrease of the twist angle, and that there are multiple small band gaps. These band structures have been reproduced by calculation, and the detailed electronic structure of a-few-degree twisted bilayer graphene has been clarified.