Direct visualization of electrostatic gating on the band structure of two-dimensional materials via Angled Resolved Photo Emission Spectroscopy (ARPES)

ORAL

Abstract

The ability to manipulate the band structure of two-dimensional (2D) materials via electrostatic gating is crucial for the realization of technological applications and study of fundamental physics with these materials. ARPES is the standard experimental technique for band structure visualization, however, to this date, the direct visualization of electrostatic gating on the band structure of 2D materials is lacking. Several obstacles have precluded the incorporation of electrostatic gating with ARPES measurements such as sample size, surface uniformity, and a working gate electrode. To address these obstacles, we performed ARPES experiments with submicron spatial resolution on a heterostructure of bilayer graphene (BLG) and hexagonal boron nitride (hBN) that is back gated with an underlying graphite flake. We found that such a device geometry enabled direct visualization of the BLG bands in conjunction with their shift via electrostatic gating. We will discuss the latest experimental progress towards the direct visualization of electrostatic gate modulation of BLG bands.

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Presenters

  • Frederic Joucken

    • Physics, University of Califorrnia, Santa Cruz

Authors

  • Frederic Joucken

    • Physics, University of Califorrnia, Santa Cruz

  • Jose Avila

    • Synchrotron SOLEIL
    • Antares beamline, Synchrotron Soleil, Paris, France

  • Zhehao Ge

    • University of California, Santa Cruz
    • Physics, University of Califorrnia, Santa Cruz
    • Physics, University of California, Santa Cruz

  • Eberth Quezada

    • University of California, Santa Cruz
    • Physics, University of Califorrnia, Santa Cruz
    • Physics, University of California, Santa Cruz

  • Hemian Yi

    • Synchrotron-SOLEIL
    • Synchrotron SOLEIL
    • Antares beamline, Synchrotron Soleil, Paris, France

  • John L Davenport

    • University of California, Santa Cruz
    • Physics, University of Califorrnia, Santa Cruz
    • Physics, University of California, Santa Cruz

  • Kenji Watanabe

    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305 0044, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science, , 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044
    • National Institute of Materials Science
    • NIMS, Japan
    • Advanced Materials Laboratory, NIMS
    • National Institute for Materials Science, Tsukuba, Japan
    • National Institute for Materials Science, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science (NIMS)
    • NIMS Tsukuba
    • National Institute for Materials Science (Japan)
    • NIMS
    • National Institute for Material Science
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
    • National Institute for Materials Science , Japan
    • National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
    • Advanced Materials Laboratory, National Institute for Materials Science, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science, Tsukuba, Ibaraki 305- 0044, Japan
    • National Institute for Material Science - Japan
    • National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
    • National Institute of Material Science
    • Advanced Material Lab, NIMS
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
    • National Institute for Materials Science, Tsukuba
    • 1-1 Namiki, Tsukuba, National Institute for Materials Science
    • NIMS/Tsukuba
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan
    • National Institute for Materials Science, Namiki, 305-0044, Japan
    • National Institute for Material Science, Japan
    • Advanced Materials Laboratory, NIMS, Japan
    • Columbia University
    • Advanced Materials Labaratory, National Institute for Materials Science
    • National Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan
    • National Institute of Materials Science, Japan

  • Takashi Taniguchi

    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305 0044, Japan
    • National Institute for Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science, , 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044
    • National Institute of Materials Science
    • NIMS, Japan
    • Advanced Materials Laboratory, NIMS
    • National Institute for Materials Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science (NIMS)
    • NIMS Tsukuba
    • NIMS
    • National Institute for Material Science
    • National Institute for Materials Science, Japan
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
    • National Institute for Materials Science , Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science, Tsukuba, Ibaraki 305- 0044, Japan
    • National Institute for Material Science - Japan
    • National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
    • National Institute of Material Science
    • Advanced Material Lab, NIMS
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
    • National Institute for Materials Science, Tsukuba
    • 1-1 Namiki, Tsukuba, National Institute for Materials Science
    • NIMS/Tsukuba
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan
    • National Institute for Materials Science, Namiki, 305-0044, Japan
    • National Institute for Material Science, Japan
    • Advanced Materials Laboratory, NIMS, Japan
    • Advanced Materials Labaratory, National Institute for Materials Science
    • National Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan
    • National Institute of Materials Science, Japan

  • Maria C. Asensio

    • Synchrotron SOLEIL
    • Synchrotron-SOLEIL
    • Antares beamline, Synchrotron Soleil, Paris, France

  • Jairo Velasco Jr.

    • University of California, Santa Cruz
    • Physics, University of Califorrnia, Santa Cruz
    • Physics, University of California, Santa Cruz