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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.

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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