Tunable layer-contrasting electronic structure in a graphene moiré lattice

ORAL

Abstract

The ability to create artificial superlattices from moiré patterns formed by van der Waals materials opens up a powerful platform to engineer controllable systems to study various problems in condensed matter physics. We identify an interesting asymmetric moiré system consisting of graphene only, by creating distinct moiré potentials on different layers of graphene. Transport data suggests multiple electronic systems with distinct characters coexist, with their interplay tunable by twist angles, temperature, and magnetic field. Such tuning knobs allow for the study of various emergent phenomena.

*The work was supported as part of the Center for the Advancement of Topological Materials, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science.

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Presenters

  • Xueqiao Wang

    • Massachusetts Institute of Technology MIT

Authors

  • Xueqiao Wang

    • Massachusetts Institute of Technology MIT

  • Zhiren Zheng

    • Massachusetts Institute of Technology

  • Ziyan Zhu

    • Harvard University

  • Stephen T Carr

    • Brown University

  • Kenji Watanabe

    • National Institute for Materials Science
    • Research Center for Functional Materials, National Institute of Materials Science
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Takashi Taniguchi

    • National Institute for Materials Science
    • Kyoto Univ
    • International Center for Materials Nanoarchitectonics, National Institute of Materials Science
    • Kyoto University
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institute For Materials Science
    • NIMS
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Efthimios Kaxiras

    • Harvard University

  • Qiong Ma

    • Boston College

  • Pablo Jarillo-Herrero

    • Massachusetts Institute of Technology MIT