Magic-angle twisted bilayer systems with quadratic band touching: Exactly flat bands with high Chern number

Studies of twisted moiré systems have been mainly focused on two-dimensional (2D) materials such as graphene with Dirac points and transition-metal dichalcogenides so far. Here we propose a twisted bilayer of 2D systems which feature stable quadratic-band-touching points and find exotic physics diff...

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Bibliographic Details
Main Authors: Ming-Rui Li, Ai-Lei He, Hong Yao
Format: Article
Language:English
Published: American Physical Society 2022-11-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.4.043151