Heterostrain Determines Flat Bands in Magic-Angle Twisted Graphene Layers.

@article{Mesple2021HeterostrainDF,
  title={Heterostrain Determines Flat Bands in Magic-Angle Twisted Graphene Layers.},
  author={Florie Mesple and Ahmed Missaoui and Tommaso Cea and Loïc Huder and Francisco Guinea and Guy Trambly de Laissardi{\`e}re and Claude Chapelier and Vincent T. Renard},
  journal={Physical review letters},
  year={2021},
  volume={127 12},
  pages={
          126405
        }
}
The moiré of twisted graphene bilayers can generate flat bands in which charge carriers do not possess enough kinetic energy to escape Coulomb interactions with each other, leading to the formation of novel strongly correlated electronic states. This exceptionally rich physics relies on the precise arrangement between the layers. Here, we survey published scanning tunneling microscope measurements to prove that near the magic-angle, native heterostrain, the relative deformations between the… 

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