Enhanced anomalous Nernst effect in disordered Dirac and Weyl materials
Name
PhysRevB.103.075424.pdf
Description
Published version
Size
502.49 KB
Format
Adobe PDF
Checksum (MD5)
e17c4e168fd07c21bd281e63a6f49b04
Author(s)
Papaj, Michał
Fu, Liang
Date Issued
2021
Journal
Physical Review B
Publisher
American Physical Society (APS)
Citation
Papaj, Michał and Fu, Liang. 2021. "Enhanced anomalous Nernst effect in disordered Dirac and Weyl materials." Physical Review B, 103 (7).
Version
Final published version
Abstract
© 2021 American Physical Society. We analyze the thermoelectric response of Dirac and Weyl semimetals using the semiclassical approach, focusing on the extrinsic contributions due to skew-scattering and side jump. Our results apply to the linear response Nernst effect in ferromagnetic Dirac materials such as Fe3Sn2 and Weyl semimetals like Co3Sn2S2. In the case of Fe3Sn2 we obtain a very good agreement with known experimental anomalous Hall effect measurements, and based on that we predict a large Nernst effect in this material. We also extend the investigation to second-order response, focusing on monolayer graphene on hBN with trigonal warping as an example. Our analysis indicates that the extrinsic contributions can be a significant component of anomalous Nernst response and may be used to explain an enhanced thermoelectric response.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PHYSREVB.103.075424
