Unique Electronic Properties of the Twisted Bilayer Graphene

Abstract

Graphene is the first experimentally discovered two‐dimensional material. This article reviews the unique properties of the so‐called twisted bilayer graphene (TBG), which can be considered a superstructure formed by stacking two graphene layers with a specific twisting angle. The main topics covered by this review include the correlated insulating phase, superconducting phase, quantum anomalous Hall effect, and the corresponding theoretical analysis. In addition, the twisted multilayer graphene, considered to have better tunability than the TBG, is discussed, followed by our conclusions and proposed research fields.