Exceptionally large anomalous Hall effect due to anticrossing of spin-split bands in the antiferromagnetic half-Heusler compound TbPtBi
Journal Article
·
· Physical Review B
- Pennsylvania State University, University Park, PA (United States); Louisiana State University
- Northeastern University, Boston, MA (United States)
- Pennsylvania State University, University Park, PA (United States)
- Academia Sinica, Taipei (Taiwan)
- National High Magnetic Field Laboratory, Tallahassee, FL (United States)
- Tulane University, New Orleans, LA (United States)
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.
- Research Organization:
- Louisiana State University, Baton Rouge, LA (United States)
- Sponsoring Organization:
- National Science Foundation; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-05CH11231; SC0012432; SC0019275
- OSTI ID:
- 1673755
- Alternate ID(s):
- OSTI ID: 1632925
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 16 Vol. 101; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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