Correlated Hofstadter spectrum and flavour phase diagram in magic-angle twisted bilayer graphene

  title={Correlated Hofstadter spectrum and flavour phase diagram in magic-angle twisted bilayer graphene},
  author={Jiachen Yu and Benjamin A. Foutty and Zhaoyu Han and Mark E. Barber and Yoni Schattner and Kenji Watanabe and Takashi Taniguchi and Philip W. Phillips and Zhixuan Shen and Steven A. Kivelson and Benjamin E. Feldman},
  journal={Nature Physics},
  pages={825 - 831}
In magic-angle twisted bilayer graphene, the moiré superlattice potential gives rise to narrow electronic bands that support a multitude of many-body quantum phases. Further richness arises in the presence of a perpendicular magnetic field, where the interplay between moiré and magnetic length scales leads to fractal Hofstadter subbands. In this strongly correlated Hofstadter platform, multiple experiments have identified gapped topological and correlated states, but little is known about the… 

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