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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.

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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