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Nano-optical study of Moire superlattice domains in twisted graphene heterostructures

ORAL

Abstract

Twisted graphene heterostructure have attracted a considerable amount of attention, realizing a plethora of physical phenomena including strongly interacting correlated states, superconductivity, magnetism and more. In this work we used several nano-optical techniques to study the formation and reconstruction of domain walls in several twisted graphene heterostructures. The techniques are uniquely suited to provide a nanometric spatial map of the domains, over an entire flake scale, which allowed us to study domain formation and internal structure on all relevant scales, and to gain insight into the reconstruction problem in several system of interest, including the twisted bilayer graphene and the twisted double bilayer graphene.

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Presenters

  • Dorri Halbertal

    Physics, Columbia University, Columbia Univ

Authors

  • Dorri Halbertal

    Physics, Columbia University, Columbia Univ

  • Nathan Finney

    Mechanical Engineering, Columbia University, Physics, Columbia University, Columbia University

  • Sai Sunku

    Physics, Columbia University, Columbia Univ

  • Shaowen Chen

    Physics, Columbia University, Columbia University, Columbia Univ

  • Charles Zhang

    Physics, Columbia University

  • Nicola Curreli

    Physics, Columbia University

  • Matthew A Yankowitz

    Physics, Columbia University, Columbia University, University of Washington, Columbia Univ

  • Alexander McLeod

    Columbia Univ, Columbia University, Physics, Columbia University

  • GuangXin Ni

    Columbia University, The Department of Physics, Columbia Univ, Physics, Columbia University

  • Alexander Kerelsky

    Columbia University, Physics, Columbia University, Physics Department, Columbia University

  • Carmen Rubio Verdu

    Physics Department, Columbia University, Department of Physics, Columbia University, New York, New York 10027, USA, Physics, Columbia University

  • Leo McGilly

    Columbia University, Physics, Columbia University

  • Abhay Narayan

    Columbia University, Physics, Columbia University, Columbia Univ

  • Cory Dean

    Department of Physics, Columbia University, Columbia University, Columbia Univ, Physics, Columbia University

  • James C Hone

    Columbia University, Mechanical Engineering, Columbia University, Columbia Univ, Physics, Columbia University, Columbia University, NY, USA, Department of Mechanical Engineering, Columbia University

  • Dmitri Basov

    Columbia University, The Department of Physics, Columbia University, Physics, Columbia University, Columbia Univ, Department of Physics, Columbia University