Universal plateau in the thermoelectric Hall conductivity of Dirac/Weyl semimetals

 · Invited

Abstract

The three-dimensional Dirac and Weyl semimetals can exhibit thermoelectric properties that are not possible in conventional metals and semiconductors. Here I focus in particular on the thermoelectric Hall effect, which is the generation of a transverse heat current upon applying an electric field in the presence of a magnetic field. I show, in particular, that the thermoelectric Hall conductivity acquires a robust plateau in the extreme quantum limit, and that the plateau value is independent of the field strength, disorder strength, carrier concentration, or carrier sign. I then discuss recent experiments on the three-dimensional Dirac semimetal ZrTe5, which clearly exhibit this plateau. Other thermoelectric coefficients in the material, such as the thermopower and Nernst coefficient, are greatly enhanced over their zero-field values even at relatively low fields.

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Presenters

  • Brian Skinner

    • Ohio State University
    • Ohio State Univ - Columbus

Authors

  • Brian Skinner

    • Ohio State University
    • Ohio State Univ - Columbus

  • Vladyslav Kozii

    • Condensed Matter Physics, Berkeley
    • University of California, Berkeley
    • Physics, University of California, Berkeley
    • Department of Physics, University of California, Berkeley

  • Wenjie Zhang

    • Peking University

  • Peipei Wang

    • Southern University of Science and Technology of China
    • Southern University of Science and Technology

  • Ran Bi

    • Peking Univ
    • Peking University

  • Chang-woo Cho

    • Southern University of Science and Technology of China
    • Southern University of Science and Technology

  • Ruidan Zhong

    • Brookhaven National Laboratory
    • Princeton University

  • John Schneeloch

    • Brookhaven National Laboratory
    • Univ of Virginia
    • University of Virginia
    • Brookhaven National Lab

  • Dapeng Yu

    • Southern University of Science and Technology of China
    • Southern University of Science and Technology
    • South University of Science and Technology of China
    • Shenzhen Key Laboratory of Quantum Science and Engineering, and Department of Physics, South University of Science and Technology

  • Genda Gu

    • Brookhaven National Laboratory
    • Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory
    • Brookhaven national lab
    • Condensed Matter Physics and Materials Science, Brookhaven National Laboratory
    • Brookhaven National Lab
    • Condensed Matter Physics and Material Science, Brookhaven National Laboratory, Upton, NY, United States
    • Brookhaven National Laboratories
    • Condensed Matter Physics and Material Science Division, Brookhaven National Laboratory

  • Liang Fu

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology MIT
    • Department of Physics, Massachusetts Institute of Technology MIT
    • Physics, MIT
    • Physics, Massachusetts Institute of Technology
    • MIT

  • Xiaosong Wu

    • Peking Univ
    • Peking University
    • School of Physics, Peking Univerisity

  • Liyuan Zhang

    • Southern University of Science and Technology of China
    • Southern University of Science and Technology