Landau Level Energy Gaps in Ultrahigh Quality Black Phosphorus Devices

ORAL

Abstract

We report black phosphorus (BP) field effect transistors with low temperature record field effect mobility up to 55,000 cm2/Vs. Thanks to the ultrahigh device quality, the integer quantum Hall effect is observed with full spin degeneracy lifting over a wide range of magnetic field 10 T – 45 T. Landau level (LL) energy gaps of filling factors ν=-1, -2, -3, -4, -5, and -6 are measured and demonstrate a linear dependence on magnetic field. This settles a theoretical controversy on the effects of BP’s anisotropic crystal structure on its LL energetics.

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Presenters

  • Son Tran

    Physics, Ohio State University

Authors

  • Son Tran

    Physics, Ohio State University

  • Jiawei Yang

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

  • Jason Wu

    Univ of California - Riverside

  • Hongwoo Baek

    National High Magnetic Field Laboratory

  • 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

  • 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

  • Ruoyu Chen

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

  • Chun Ning Lau

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