Realization of topological Mott insulator in a twisted bilayer graphene lattice model
oleh: Bin-Bin Chen, Yuan Da Liao, Ziyu Chen, Oskar Vafek, Jian Kang, Wei Li, Zi Yang Meng
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2021-09-01 |
Deskripsi
Magic-angle twisted bilayer graphene exhibits a quantum anomalous Hall effect at 3/4 filling; however, its mechanism is debated. Here, the authors show that such a phase can be realized in a lattice model of twisted bilayer graphene in the strong coupling limit, and interpret the results in terms of a topological Mott insulator phase.