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Quenching Rotational Inhomogeneities In Polycrystalline Graphene

ORAL

Abstract

The discovery of tunable superconducting and Mott-insulating phases in twisted bilayer graphene (TBG) has galvanized investigations into a number of techniques for dynamically adjusting small twist angles in graphene heterostructures. Here we use low-energy electron microscopy (LEEM) and low-energy electron diffraction (LEED) to characterize the formation of domains of different rotational orders for in-situ grown graphene on various metallic substrates. These results suggest that LEEM could provide a viable method for characterizing small graphene twist angles in inhomogeneous systems.

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Presenters

  • Samuel Brantly

    Lawrence Berkeley National Laboratory

Authors

  • Samuel Brantly

    Lawrence Berkeley National Laboratory

  • Samuel Ciocys

    University of California, Berkeley, Physics, University of California, Berkeley, Lawrence Berkeley National Laboratory, Department of Physics, University of California Berkeley

  • Kayla Currier

    Lawrence Berkeley National Laboratory, Physics, University of California Berkeley

  • Andreas Schmid

    Lawrence Berkeley National Laboratory, National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA

  • Alessandra Lanzara

    University of California, Berkeley, Department of Physics, University of California, Physics, University of California, Berkeley, Lawrence Berkeley National Laboratory, Department of Physics, University of California Berkeley, Physics, University of California Berkeley, Physics, UC Berkeley