Phase Transitions in Tetralayer Graphene at Charge Neutrality

ORAL

Abstract

As Bernal-stacked tetralayer graphene (4LG) hosts two intersecting massive Dirac bands, it supports an excellent platform for investigating multiband transport. Here we report studies on 4LG at the lowest Landau level half-filling in very high magnetic field, where the effect of Coulomb interactions is considerable. By exploring the dependence on magnetic and displacement fields of ν=0 quantum Hall state, the experimental result presents intriguing phase diagram of ground states. In particular, the tilted field magnetotransport reveals the interplay between crystal symmetry and Coulomb interactions in multiple Dirac band systems.

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Presenters

  • Shi Che

    Physics, The Ohio State University

Authors

  • Shi Che

    Physics, The Ohio State University

  • Yanmeng Shi

    Univ of California, Riverside, Physics, University of California, Riverside

  • Ruoyu Chen

    Physics, The Ohio State University, The Ohio State University, Physics, Ohio State University

  • Jiawei Yang

    Physics, The Ohio State University, Ohio State Univ - Columbus, Physics, Ohio State University

  • Takashi Taniguchi

    National Institute for Materials Science, NIMS, National Institute for Material Science, Advanced Materials Laboratory, National Institute for Materials Science, National Institute of Materials Science, Research Center for Functional Materials, National Institute for Materials Science, National Institute for Materials Science (NIMS, Advanced Materials Laboratory, NIMS, National Institute for Materials Science, Advanced Materials Laboratory, National Institue for Materials Science, National Institute of Material Science, National Institute for Matericals Science, Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, NIMS-Japan

  • Kenji Watanabe

    National Institute for Materials Science, NIMS, National Institute for Material Science, Advanced Materials Laboratory, National Institute for Materials Science, National Institute of Materials Science, Research Center for Functional Materials, National Institute for Materials Science, National Institute for Materials Science (NIMS, Advanced Materials Laboratory, NIMS, National Institute for Materials Science, Advanced Materials Laboratory, National Institue for Materials Science, National Institute of Material Science, National Institute for Matericals Science, Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Advanced materials laboratory, National institute for Materials Science, NIMS-Japan

  • Dmitry Smirnov

    1800 East Paul Dirac Drive, Natl High Magnetic Field Lab, Natl High Magnetic Field Lab, National High Magnetic Field Laboratory, NHMFL, Condensed Matter Science, National High Magnetic Field Laboratory, NHMFL, FSU

  • Yafis Barlas

    Univ of California - Riverside, Physics and Astronomy, University of California, Riverside, Computer and Electrical Engineering, University of California at Riverside, Physics, University of California, Riverside, University of California, Riverside

  • Chun Ning Lau

    Physics, Ohio State Univ - Columbus, Ohio State Univ - Columbus, The Ohio State University, Physics, The Ohio State University