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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.

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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