Manipulation of the anomalous Hall effect of magic angle twisted bilayer graphene with light

ORAL

Abstract

Flat bands in graphene-based moiré structures offer a wide range of emerging strongly correlated and topological phases, including Chern insulators and superconductivity. Substantial information about these phases can be revealed by probing their properties through their interaction with light. In this talk, I will show the effects of near infra-red illumination on the transport properties of magic-angle twisted bilayer graphene, focusing on the anomalous Hall effect. I will discuss the effects of photo-doping, heating and light polarization on the magnetic states. Our results shed light on the interaction between light and orbital magnetism.

*This work was supported by the U. S. Department of Energy (DOE) Office of Basic Energy Science, Division of Materials Science and Engineering at Stanford under contract No. DE-AC02-76SF00515. EP was partially supported by the Koret Foundation.

–

Presenters

  • Eylon Persky

    • Stanford University

Authors

  • Eylon Persky

    • Stanford University

  • Minhao He

    • Princeton University

  • Jiaqi Cai

    • University of Washington

  • Takashi Taniguchi

    • National Institute for Materials Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science

  • Kenji Watanabe

    • National Institute for Materials Science
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan
    • National Institute of Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science

  • Steven Allan Kivelson

    • Stanford University

  • Xiaodong Xu

    • University of Washington

  • Aharon Kapitulnik

    • Stanford University