Electrostatic interactions in twisted bilayer graphene

The effects of the long range electrostatic interaction in twisted bilayer graphene are described using the Hartree-Fock approximation. The results show a significant dependence of the band widths and shapes on electron filling, and the existence of broken symmetry phases at many densities, either valley/spin polarized, with broken sub-lattice symmetry, or both.

Automated summary

The effects of long range electrostatic interaction in twisted bilayer graphene have been investigated using the Hartree-Fock approximation. The results demonstrate a significant dependence of band widths and shapes on electron filling, as well as the existence of broken symmetry phases at various densities.