Topological Nernst effect, anomalous Nernst effect, and anomalous thermal Hall effect in the Dirac semimetal
Abstract
Topological semimetals have been a focal point of research in recent years. One of the salient characters of topological semimetals is the anomalous Hall effect arising from the nontrivial momentum-space Berry phase. In contrast, anomalous transverse thermoelectric coefficient and thermal Hall effect are much less explored up to date. In this paper, we report thermoelectric and thermal transport properties of Fe3Sn2, a prototypical Dirac semimetal. We find that Fe3Sn2 exhibits large topological Nernst effect which is associated with the non-zero spin chirality of the skyrmion bubble phase. Furthermore, Fe3Sn2 shows prominent anomalous thermal Hall effect and anomalous Nernst effect with features similar to the anomalous Hall effect. The anomalous Nernst signal is about 2.1 μV/K at room temperature, which is comparable to the largest value reported thus far. These results highlight the synergic effects of Berry phase in both real space and momentum space of Fe3Sn2, and this study demonstrates an effective strategy of investigating topological materials by measuring their transverse thermal and thermoelectric responses.
- Authors:
-
[1];
[1]
- Michigan State Univ., East Lansing, MI (United States)
- Michigan State Univ., East Lansing, MI (United States); Southeast Univ., Nanjing (China)
- Publication Date:
- Research Org.:
- Michigan State Univ., East Lansing, MI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1780856
- Grant/Contract Number:
- SC0019259
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 103; Journal Issue: 20; 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
Citation Formats
Zhang, H., Xu, C.Q., and Ke, Xianglin. Topological Nernst effect, anomalous Nernst effect, and anomalous thermal Hall effect in the Dirac semimetal Fe 3 Sn 2. United States: N. p., 2021.
Web. doi:10.1103/physrevb.103.l201101.
Zhang, H., Xu, C.Q., & Ke, Xianglin. Topological Nernst effect, anomalous Nernst effect, and anomalous thermal Hall effect in the Dirac semimetal Fe 3 Sn 2. United States. https://doi.org/10.1103/physrevb.103.l201101
Zhang, H., Xu, C.Q., and Ke, Xianglin. Mon .
"Topological Nernst effect, anomalous Nernst effect, and anomalous thermal Hall effect in the Dirac semimetal Fe 3 Sn 2". United States. https://doi.org/10.1103/physrevb.103.l201101. https://www.osti.gov/servlets/purl/1780856.
@article{osti_1780856,
title = {Topological Nernst effect, anomalous Nernst effect, and anomalous thermal Hall effect in the Dirac semimetal Fe 3 Sn 2},
author = {Zhang, H. and Xu, C.Q. and Ke, Xianglin},
abstractNote = {Topological semimetals have been a focal point of research in recent years. One of the salient characters of topological semimetals is the anomalous Hall effect arising from the nontrivial momentum-space Berry phase. In contrast, anomalous transverse thermoelectric coefficient and thermal Hall effect are much less explored up to date. In this paper, we report thermoelectric and thermal transport properties of Fe3Sn2, a prototypical Dirac semimetal. We find that Fe3Sn2 exhibits large topological Nernst effect which is associated with the non-zero spin chirality of the skyrmion bubble phase. Furthermore, Fe3Sn2 shows prominent anomalous thermal Hall effect and anomalous Nernst effect with features similar to the anomalous Hall effect. The anomalous Nernst signal is about 2.1 μV/K at room temperature, which is comparable to the largest value reported thus far. These results highlight the synergic effects of Berry phase in both real space and momentum space of Fe3Sn2, and this study demonstrates an effective strategy of investigating topological materials by measuring their transverse thermal and thermoelectric responses.},
doi = {10.1103/physrevb.103.l201101},
journal = {Physical Review B},
number = 20,
volume = 103,
place = {United States},
year = {Mon May 03 00:00:00 EDT 2021},
month = {Mon May 03 00:00:00 EDT 2021}
}
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