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Topological Nernst and topological thermal Hall effect in rare-earth kagome ScMn6Sn6
Abstract
Thermal and thermoelectric measurements are known as powerful tools to uncover the physical properties of quantum materials due to their sensitivity towards the scattering and chirality of heat carriers. We use these techniques to confirm the presence of momentum and real-space topology in ScMn6Sn6. There is an unconventional dramatic increase in the Seebeck coefficient on entering the transverse conical spiral (TCS) state below $$T$$ = 200 K, suggesting an unusual scattering of heat carriers. In addition, the observed anomalous thermal Hall effect and the anomalous Nernst effect indicate nonzero Berry curvature in k space. Furthermore, we identify a significant topological contribution to the thermal Hall and Nernst signals in the TCS phase revealing the impacts of real-space Berry curvature. We discuss the presence of the topological thermal Hall effect and topological Nernst effect in the diverse HfFe6Ge6 family. In conclusion, this study illustrates the importance of transverse thermal and thermoelectric measurements to investigate the origin of topological transport in the noncoplanar magnetic phases in this family of kagome metals.
- Authors:
-
- University of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- University of Tennessee, Knoxville, TN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); Gordon and Betty Moore Foundation
- OSTI Identifier:
- 2000252
- Grant/Contract Number:
- AC05-00OR22725; GBMF9069
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 108; Journal Issue: 12; 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; Magnetotransport; Thermal conductivity; Thermal properties; Thermoelectric effects; Topological materials; Condensed Matter, Materials & Applied Physics
Citation Formats
Madhogaria, Richa P., Mozaffari, Shirin, Zhang, Heda, Meier, William R., Do, Seung-Hwan, Xue, Rui, Matsuoka, Takahiro, and Mandrus, David G. Topological Nernst and topological thermal Hall effect in rare-earth kagome ScMn6Sn6. United States: N. p., 2023.
Web. doi:10.1103/physrevb.108.125114.
Madhogaria, Richa P., Mozaffari, Shirin, Zhang, Heda, Meier, William R., Do, Seung-Hwan, Xue, Rui, Matsuoka, Takahiro, & Mandrus, David G. Topological Nernst and topological thermal Hall effect in rare-earth kagome ScMn6Sn6. United States. https://doi.org/10.1103/physrevb.108.125114
Madhogaria, Richa P., Mozaffari, Shirin, Zhang, Heda, Meier, William R., Do, Seung-Hwan, Xue, Rui, Matsuoka, Takahiro, and Mandrus, David G. Thu .
"Topological Nernst and topological thermal Hall effect in rare-earth kagome ScMn6Sn6". United States. https://doi.org/10.1103/physrevb.108.125114.
@article{osti_2000252,
title = {Topological Nernst and topological thermal Hall effect in rare-earth kagome ScMn6Sn6},
author = {Madhogaria, Richa P. and Mozaffari, Shirin and Zhang, Heda and Meier, William R. and Do, Seung-Hwan and Xue, Rui and Matsuoka, Takahiro and Mandrus, David G.},
abstractNote = {Thermal and thermoelectric measurements are known as powerful tools to uncover the physical properties of quantum materials due to their sensitivity towards the scattering and chirality of heat carriers. We use these techniques to confirm the presence of momentum and real-space topology in ScMn6Sn6. There is an unconventional dramatic increase in the Seebeck coefficient on entering the transverse conical spiral (TCS) state below $T$ = 200 K, suggesting an unusual scattering of heat carriers. In addition, the observed anomalous thermal Hall effect and the anomalous Nernst effect indicate nonzero Berry curvature in k space. Furthermore, we identify a significant topological contribution to the thermal Hall and Nernst signals in the TCS phase revealing the impacts of real-space Berry curvature. We discuss the presence of the topological thermal Hall effect and topological Nernst effect in the diverse HfFe6Ge6 family. In conclusion, this study illustrates the importance of transverse thermal and thermoelectric measurements to investigate the origin of topological transport in the noncoplanar magnetic phases in this family of kagome metals.},
doi = {10.1103/physrevb.108.125114},
journal = {Physical Review. B},
number = 12,
volume = 108,
place = {United States},
year = {Thu Sep 07 00:00:00 EDT 2023},
month = {Thu Sep 07 00:00:00 EDT 2023}
}
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