Multiple topological transitions in twisted bilayer graphene near the first magic angle

@article{Hejazi2019MultipleTT,
  title={Multiple topological transitions in twisted bilayer graphene near the first magic angle},
  author={Kasra Hejazi and Chunxiao Liu and Hassan Shapourian and Xiao Chen and Leon Balents},
  journal={Physical Review B},
  year={2019},
  volume={99},
  pages={035111}
}
  • Kasra Hejazi, Chunxiao Liu, +2 authors Leon Balents
  • Published 2019
  • Physics
  • Physical Review B
  • Recent experiments have observed strongly correlated physics in twisted bilayer graphene (TBG) at very small angles, along with nearly flat electron bands at certain fillings. A good starting point in understanding the physics is a continuum model (CM) proposed by Lopes dos Santos et al. [Phys. Rev. Lett. 99, 256802 (2007)] and Bistritzer et al. [PNAS 108, 12233 (2011)] for TBG at small twist angles, which successfully predicts the bandwidth reduction of the middle two bands of TBG near the… CONTINUE READING

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    Tunable moiré bands and strong correlations in small-twist-angle bilayer graphene