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Observation of a thermoelectric Hall plateau in the extreme quantum limit

Author

Listed:
  • Wenjie Zhang

    (Beijing Key Laboratory of Quantum Devices, Peking University)

  • Peipei Wang

    (Southern University of Science and Technology)

  • Brian Skinner

    (Massachusetts Institute of Technology
    Ohio State University)

  • Ran Bi

    (Beijing Key Laboratory of Quantum Devices, Peking University)

  • Vladyslav Kozii

    (Massachusetts Institute of Technology
    University of California
    Lawrence Berkeley National Laboratory)

  • Chang-Woo Cho

    (Southern University of Science and Technology)

  • Ruidan Zhong

    (Brookhaven National Laboratory)

  • John Schneeloch

    (Brookhaven National Laboratory)

  • Dapeng Yu

    (Southern University of Science and Technology)

  • Genda Gu

    (Brookhaven National Laboratory)

  • Liang Fu

    (Massachusetts Institute of Technology)

  • Xiaosong Wu

    (Beijing Key Laboratory of Quantum Devices, Peking University
    Peking University)

  • Liyuan Zhang

    (Southern University of Science and Technology)

Abstract

The thermoelectric Hall effect is the generation of a transverse heat current upon applying an electric field in the presence of a magnetic field. Here, we demonstrate that the thermoelectric Hall conductivity αxy in the three-dimensional Dirac semimetal ZrTe5 acquires a robust plateau in the extreme quantum limit of magnetic field. The plateau value is independent of the field strength, disorder strength, carrier concentration, or carrier sign. We explain this plateau theoretically and show that it is a unique signature of three-dimensional Dirac or Weyl electrons in the extreme quantum limit. We further find that other thermoelectric coefficients, such as the thermopower and Nernst coefficient, are greatly enhanced over their zero-field values even at relatively low fields.

Suggested Citation

  • Wenjie Zhang & Peipei Wang & Brian Skinner & Ran Bi & Vladyslav Kozii & Chang-Woo Cho & Ruidan Zhong & John Schneeloch & Dapeng Yu & Genda Gu & Liang Fu & Xiaosong Wu & Liyuan Zhang, 2020. "Observation of a thermoelectric Hall plateau in the extreme quantum limit," Nature Communications, Nature, vol. 11(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14819-7
    DOI: 10.1038/s41467-020-14819-7
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    Cited by:

    1. Jingyue Wang & Yuxuan Jiang & Tianhao Zhao & Zhiling Dun & Anna L. Miettinen & Xiaosong Wu & Martin Mourigal & Haidong Zhou & Wei Pan & Dmitry Smirnov & Zhigang Jiang, 2021. "Magneto-transport evidence for strong topological insulator phase in ZrTe5," Nature Communications, Nature, vol. 12(1), pages 1-7, December.

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