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Title: Observation of a thermoelectric Hall plateau in the extreme quantum limit

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 α xy in the three-dimensional Dirac semimetal ZrTe 5 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.

Authors:
 [1];  [2]; ORCiD logo [3];  [1]; ORCiD logo [4];  [2];  [5];  [5]; ORCiD logo [2];  [5];  [6]; ORCiD logo [1]; ORCiD logo [2]
  1. Peking Univ., Beijing (China)
  2. Univ. of Science and Technology, Shenzhen (China)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); The Ohio State Univ., Columbus, OH (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of California, Berkeley, CA (United States)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States)
  6. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Key Basic Research Program of China; National Science Foundation (NSF); National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1603632
Grant/Contract Number:  
[AC02-05CH11231; KQTD2016022619565991]
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
[ Journal Volume: 11; Journal Issue: 1]; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English

Citation Formats

Zhang, Wenjie, Wang, Peipei, Skinner, Brian, Bi, Ran, Kozii, Vladyslav, Cho, Chang-Woo, Zhong, Ruidan, Schneeloch, John, Yu, Dapeng, Gu, Genda, Fu, Liang, Wu, Xiaosong, and Zhang, Liyuan. Observation of a thermoelectric Hall plateau in the extreme quantum limit. United States: N. p., 2020. Web. doi:10.1038/s41467-020-14819-7.
Zhang, Wenjie, Wang, Peipei, Skinner, Brian, Bi, Ran, Kozii, Vladyslav, Cho, Chang-Woo, Zhong, Ruidan, Schneeloch, John, Yu, Dapeng, Gu, Genda, Fu, Liang, Wu, Xiaosong, & Zhang, Liyuan. Observation of a thermoelectric Hall plateau in the extreme quantum limit. United States. doi:10.1038/s41467-020-14819-7.
Zhang, Wenjie, Wang, Peipei, Skinner, Brian, Bi, Ran, Kozii, Vladyslav, Cho, Chang-Woo, Zhong, Ruidan, Schneeloch, John, Yu, Dapeng, Gu, Genda, Fu, Liang, Wu, Xiaosong, and Zhang, Liyuan. Tue . "Observation of a thermoelectric Hall plateau in the extreme quantum limit". United States. doi:10.1038/s41467-020-14819-7. https://www.osti.gov/servlets/purl/1603632.
@article{osti_1603632,
title = {Observation of a thermoelectric Hall plateau in the extreme quantum limit},
author = {Zhang, Wenjie and Wang, Peipei and Skinner, Brian and Bi, Ran and Kozii, Vladyslav and Cho, Chang-Woo and Zhong, Ruidan and Schneeloch, John and Yu, Dapeng and Gu, Genda and Fu, Liang and Wu, Xiaosong and Zhang, Liyuan},
abstractNote = {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.},
doi = {10.1038/s41467-020-14819-7},
journal = {Nature Communications},
number = [1],
volume = [11],
place = {United States},
year = {2020},
month = {2}
}

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