Imaging Viscous Flow of the Dirac Fluid in Graphene Using a Quantum Spin Magnetometer

ORAL

Abstract

The electron-hole plasma in charge-neutral graphene, known as the Dirac fluid, is predicted to realize a quantum critical system whose transport features a universal hydrodynamic description, even at room temperature. In this work[1], we directly image viscous Dirac fluid flow at room temperature via measurement of the associated stray magnetic field. Nanoscale magnetic imaging[2,3] is performed using quantum spin magnetometers realized with NV centers in diamond. Our measurement reveals a parabolic Poiseuille profile for electron flow in a graphene channel near the charge neutrality point, establishing the viscous transport of the Dirac fluid. Measurement of viscosity indicates that a nearly-ideal electron fluid presides in graphene at room temperature. Our results pave the way to study hydrodynamic transport in quantum critical fluids relevant to strongly-correlated electrons in superconductors.
[1] M. J. H. Ku, T. X. Zhou, Q. Li, Y. J. Shin, J. K. Shi, C. Burch, H. Zhang, F. Casola, T. Taniguchi, K. Watanabe, P. Kim, A. Yacoby, R. L. Walsworth, ArXiv190510791 Cond-Mat Physicsquant-Ph 2019.
[2] T. X. Zhou, R. J. Stöhr, A. Yacoby, Appl. Phys. Lett. 2017, 111, 163106.
[3] L. Xie, T. X. Zhou, R. J. Stöhr, A. Yacoby, Adv. Mater. 2018, 30, 1705501.

*see Ref [1] for funding ack.

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Presenters

  • Tony Zhou

    • Harvard University

Authors

  • Mark Jen-Hao Ku

    • Harvard University
    • Harvard - Smithsonian Center for Astrophysics

  • Tony Zhou

    • Harvard University

  • Qing Li

    • MIT
    • Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (MIT)
    • Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology

  • Young J. Shin

    • Harvard University

  • Jing Shi

    • Harvard University

  • Claire Burch

    • Harvard University

  • Huiliang Zhang

    • Harvard University

  • Francesco Casola

    • Harvard University

  • Yonglong Xie

    • Princeton University
    • Department of Physics, Harvard University
    • Harvard University

  • Andrew Pierce

    • Harvard University
    • Department of Physics, Harvard University

  • Takashi Taniguchi

    • National Institute for Materials Science, Japan
    • National Institute for Material Science
    • National Institute for Materials Science
    • National Institute for Materials Science, Tsukuba
    • Research Center for Functional Materials, NIMS
    • nims
    • Advanced Materials Laboratory, National Institute for Materials Science
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • NIMS
    • National Institute for Material Science - Japan
    • NIMS Tsukuba
    • National Institute for Materials Science, Namiki 1-1, Ibaraki 305-0044, Japan.
    • National Institute for Materials Science (NIMS)
    • National Institute for Materials Science,Tsukuba, Ibaraki 305-0047, Japan
    • Advanced Materials Laboratory, NIMS, Japan
    • National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan
    • National Institute of Materials Science
    • National Institute for Materials Science, University of Tsukuba
    • National Institute for Materials Science, Tsukuba, Japan
    • National Institue for Material Science, Tsukuba
    • Advanced Materials Laboratory, NIMS
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba 305-0044, Japan
    • Advanced Matrials Lab, NIMS
    • National Institute for Material Science, Tsukuba, Japan
    • National institute for materials science
    • NIMS-Tsukuba
    • NIMS, Japan
    • National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan
    • National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
    • Advanced Materials Laboratory, National Institute of Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science 1-1 Namiki, Tsukuba, 305-0044, Japan
    • National Institute of Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science (Japan)
    • Physics, NIMS
    • National Institute of Materials Science, Japan
    • National Institute of Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • NIMS - Tsukuba

  • Kenji Watanabe

    • National Institute for Materials Science, Japan
    • National Institute for Material Science
    • National Institute for Materials Science
    • National Institute for Materials Science, Tsukuba
    • Research Center for Functional Materials, NIMS
    • nims
    • Advanced Materials Laboratory, National Institute for Materials Science
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • NIMS
    • National Institute for Material Science - Japan
    • NIMS Tsukuba
    • National Institute for Materials Science, Namiki 1-1, Ibaraki 305-0044, Japan.
    • National Institute for Materials Science (NIMS)
    • National Institute for Materials Science,Tsukuba, Ibaraki 305-0047, Japan
    • Advanced Materials Laboratory, NIMS, Japan
    • National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan
    • National Institute of Materials Science
    • National Institute for Materials Science, University of Tsukuba
    • National Institute for Materials Science, Tsukuba, Japan
    • National Institute for Material Science, Japan
    • National Institue for Material Science, Tsukuba
    • Advanced Materials Laboratory, NIMS
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba 305-0044, Japan
    • Advanced Matrials Lab, NIMS
    • National Institute for Material Science, Tsukuba, Japan
    • National institute for materials science
    • NIMS-Tsukuba
    • NIMS, Japan
    • National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
    • NIRM
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan
    • National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
    • Advanced Materials Laboratory, National Institute of Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science 1-1 Namiki, Tsukuba, 305-0044, Japan
    • National Institute of Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science (Japan)
    • Physics, NIMS
    • National Institute of Materials Science, Japan
    • National Institute of Materials Science (NIMS)
    • National Institute of Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • NIMS - Tsukuba

  • Philip Kim

    • Harvard University
    • Harvard Univ
    • Physics, Harvard University

  • Amir Yacoby

    • Harvard University
    • Department of Physics, Harvard University
    • Physics, Harvard University
    • Department of Physics, Harvard University, Cambridge, MA, 02138, USA

  • Ronald L Walsworth

    • Harvard University
    • Harvard - Smithsonian Center for Astrophysics