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Title: Exceptionally large anomalous Hall effect due to anticrossing of spin-split bands in the antiferromagnetic half-Heusler compound TbPtBi

Abstract

We have investigated the magnetotransport properties and the topological electronic structure of the half-Heusler compound TbPtBi. Our experiments reveal an exceptionally large anomalous Hall effect (AHE) in the canted antiferromagnetic state of TbPtBi with the anomalous Hall angle reaching ~0.68–0.76, which is a few times larger than the previously reported record in GdPtBi. First-principles electronic structure and the associated anomalous Hall conductivity were computed in order to interpret the experimental results. Furthermore, our analysis shows that the AHE in TbPtBi does not originate from the Weyl points but that it is driven by the large net Berry curvature produced by the anticrossing of spin-split bands near the Fermi level in TbPtBi.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1];  [3]; ORCiD logo [2];  [2]; ORCiD logo [4];  [5];  [3];  [5];  [2]; ORCiD logo [1]
  1. Pennsylvania State University, University Park, PA (United States)
  2. Northeastern University, Boston, MA (United States)
  3. Academia Sinica, Taipei (Taiwan)
  4. National High Magnetic Field Laboratory, Tallahassee, FL (United States)
  5. Tulane University, New Orleans, LA (United States)
Publication Date:
Research Org.:
Louisiana State Univ., Baton Rouge, LA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1673755
Alternate Identifier(s):
OSTI ID: 1632925
Grant/Contract Number:  
SC0012432; 1917579; 1832031; DMR-1539916; AC02-05CH11231; SC0019275
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 16; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; First-principles calculations; Hall effect; Topological materials; Half-Heusler alloy

Citation Formats

Zhu, Yanglin, Singh, Bahadur, Wang, Yu, Huang, Cheng-Yi, Chiu, Wei-Chi, Wang, Baokai, Graf, David, Zhang, Yubo, Lin, Hsin, Sun, Jianwei, Bansil, Arun, and Mao, Zhiqiang. Exceptionally large anomalous Hall effect due to anticrossing of spin-split bands in the antiferromagnetic half-Heusler compound TbPtBi. United States: N. p., 2020. Web. doi:10.1103/physrevb.101.161105.
Zhu, Yanglin, Singh, Bahadur, Wang, Yu, Huang, Cheng-Yi, Chiu, Wei-Chi, Wang, Baokai, Graf, David, Zhang, Yubo, Lin, Hsin, Sun, Jianwei, Bansil, Arun, & Mao, Zhiqiang. Exceptionally large anomalous Hall effect due to anticrossing of spin-split bands in the antiferromagnetic half-Heusler compound TbPtBi. United States. https://doi.org/10.1103/physrevb.101.161105
Zhu, Yanglin, Singh, Bahadur, Wang, Yu, Huang, Cheng-Yi, Chiu, Wei-Chi, Wang, Baokai, Graf, David, Zhang, Yubo, Lin, Hsin, Sun, Jianwei, Bansil, Arun, and Mao, Zhiqiang. Wed . "Exceptionally large anomalous Hall effect due to anticrossing of spin-split bands in the antiferromagnetic half-Heusler compound TbPtBi". United States. https://doi.org/10.1103/physrevb.101.161105. https://www.osti.gov/servlets/purl/1673755.
@article{osti_1673755,
title = {Exceptionally large anomalous Hall effect due to anticrossing of spin-split bands in the antiferromagnetic half-Heusler compound TbPtBi},
author = {Zhu, Yanglin and Singh, Bahadur and Wang, Yu and Huang, Cheng-Yi and Chiu, Wei-Chi and Wang, Baokai and Graf, David and Zhang, Yubo and Lin, Hsin and Sun, Jianwei and Bansil, Arun and Mao, Zhiqiang},
abstractNote = {We have investigated the magnetotransport properties and the topological electronic structure of the half-Heusler compound TbPtBi. Our experiments reveal an exceptionally large anomalous Hall effect (AHE) in the canted antiferromagnetic state of TbPtBi with the anomalous Hall angle reaching ~0.68–0.76, which is a few times larger than the previously reported record in GdPtBi. First-principles electronic structure and the associated anomalous Hall conductivity were computed in order to interpret the experimental results. Furthermore, our analysis shows that the AHE in TbPtBi does not originate from the Weyl points but that it is driven by the large net Berry curvature produced by the anticrossing of spin-split bands near the Fermi level in TbPtBi.},
doi = {10.1103/physrevb.101.161105},
journal = {Physical Review B},
number = 16,
volume = 101,
place = {United States},
year = {Wed Apr 08 00:00:00 EDT 2020},
month = {Wed Apr 08 00:00:00 EDT 2020}
}

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