Anisotropic suppression of the phononic thermal conductivity by magnetic field in SmAlSi
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866916579514515456 |
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| author | Ahmad, Mujeeb Alam, Md Shahin Yao, Xiaohan Tafti, Fazel Matusiak, Marcin |
| author_facet | Ahmad, Mujeeb Alam, Md Shahin Yao, Xiaohan Tafti, Fazel Matusiak, Marcin |
| contents | We report the thermal and electrical conductivity data for the magnetic Weyl semimetal SmAlSi measured in a magnetic field (B) with two different orientations. In one case, B was applied perpendicular to the heat or charge current, in the other they were parallel. For both configurations, the magnetic field affects the magnetic structure identically as B is always parallel to the equivalent tetragonal axis. Our results indicate that phonon heat transport in response to the magnetic field exhibits strong anisotropy at low temperature: it appears to be independent of B in the perpendicular configuration but is strongly suppressed in the parallel configuration. Understanding this unusual behaviour can lead to designing better materials for thermoelectricity or directional heat switches. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_13542 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anisotropic suppression of the phononic thermal conductivity by magnetic field in SmAlSi Ahmad, Mujeeb Alam, Md Shahin Yao, Xiaohan Tafti, Fazel Matusiak, Marcin Strongly Correlated Electrons We report the thermal and electrical conductivity data for the magnetic Weyl semimetal SmAlSi measured in a magnetic field (B) with two different orientations. In one case, B was applied perpendicular to the heat or charge current, in the other they were parallel. For both configurations, the magnetic field affects the magnetic structure identically as B is always parallel to the equivalent tetragonal axis. Our results indicate that phonon heat transport in response to the magnetic field exhibits strong anisotropy at low temperature: it appears to be independent of B in the perpendicular configuration but is strongly suppressed in the parallel configuration. Understanding this unusual behaviour can lead to designing better materials for thermoelectricity or directional heat switches. |
| title | Anisotropic suppression of the phononic thermal conductivity by magnetic field in SmAlSi |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2501.13542 |