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Electrostatic interactions in twisted bilayer graphene

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arxiv 2109.06038 v1 pith:GS3KE5LT submitted 2021-09-13 cond-mat.mes-hall cond-mat.str-el

Tommaso Cea , Pierre A. Pantaleón , Niels R. Walet , Francisco Guinea This is my paper · ORCID
classification cond-mat.mes-hallcond-mat.str-el
keywords bilayerbrokenelectrostaticgraphenesymmetrytwistedapproximationband
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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 sublattice symmetry, or both.

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