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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