Chiral model of twisted bilayer graphene realized in a monolayer

ORAL

Abstract

When graphene is subject to a superlattice potential with a nearly commensurate $sqrt{3} imessqrt{3}$ supercell, the resulting moir'e physics exactly maps to the chiral model of twisted bilayer graphene, except with half as many degrees of freedom. In this talk, we describe this mapping, characterize the interacting physics at integer filling, and determine the impact of symmetry-allowed deviations from the ideal chiral model.

* Work by A.D. is supported by the National Science Foundation under the Columbia MRSEC on Precision-Assembled Quantum Materials (PAQM), Grant No. DMR-2011738. J.B., J.C., V.C., and D.G. acknowledge support from the Flatiron Institute, a division of the Simons Foundation. J.C. acknowledges the Alfred P. Sloan Foundation through a Sloan Research Fellowship and hospitality by the Kavli Institute for Theoretical Physics, where this research was supported in part by the National Science Foundation under Grant No. NSF PHY-1748958.

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Publication: Phys. Rev. B 108, 075126

Presenters

  • Aaron P Dunbrack

    Stony Brook University (SUNY)

Authors

  • Aaron P Dunbrack

    Stony Brook University (SUNY)

  • Valentin Crépel

    Flatiron Institute (CCQ)

  • Daniele Guerci

    Center for Computational Quantum Physics, Flatiron Institute

  • John R Bonini

    Simons Foundation

  • Jennifer Cano

    Stony Brook University, Stony Brook University, Flatiron Institute