Band structure and insulating states driven by Coulomb interaction in twisted bilayer graphene

@article{Cea2020BandSA,
  title={Band structure and insulating states driven by Coulomb interaction in twisted bilayer graphene},
  author={Tommaso Cea and Francisco Guinea},
  journal={Physical Review B},
  year={2020},
  volume={102},
  pages={045107}
}
We analyze the phase diagram of twisted graphene bilayers near a magic angle. We consider the effect of the long-range Coulomb interaction, treated within the self-consistent Hartree-Fock approximation, and we study arbitrary band fillings. We find a rich phase diagram, with different broken symmetry phases, although they do not show necessarily a gap at the Fermi energy. There are nontrivial effects of the electrostatic potential on the shape and the gaps of the bands in the broken symmetry… Expand

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