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Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony
Detecting hydrodynamic fingerprints in the flow of electrons in solids constitutes a dynamic field of investigation in contemporary condensed matter physics. Most attention has been focused on the regime near the degeneracy temperature when the thermal velocity can present a spatially modulated prof...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7794374/ https://www.ncbi.nlm.nih.gov/pubmed/33420029 http://dx.doi.org/10.1038/s41467-020-20420-9 |
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author | Jaoui, Alexandre Fauqué, Benoît Behnia, Kamran |
author_facet | Jaoui, Alexandre Fauqué, Benoît Behnia, Kamran |
author_sort | Jaoui, Alexandre |
collection | PubMed |
description | Detecting hydrodynamic fingerprints in the flow of electrons in solids constitutes a dynamic field of investigation in contemporary condensed matter physics. Most attention has been focused on the regime near the degeneracy temperature when the thermal velocity can present a spatially modulated profile. Here, we report on the observation of a hydrodynamic feature in the flow of quasi-ballistic degenerate electrons in bulk antimony. By scrutinizing the temperature dependence of thermal and electric resistivities, we detect a size-dependent departure from the Wiedemann-Franz law, unexpected in the momentum-relaxing picture of transport. This observation finds a natural explanation in the hydrodynamic picture, where upon warming, momentum-conserving collisions reduce quadratically in temperature both viscosity and thermal diffusivity. This effect has been established theoretically and experimentally in normal-state liquid (3)He. The comparison of electrons in antimony and fermions in (3)He paves the way to a quantification of momentum-conserving fermion-fermion collision rate in different Fermi liquids. |
format | Online Article Text |
id | pubmed-7794374 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-77943742021-01-21 Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony Jaoui, Alexandre Fauqué, Benoît Behnia, Kamran Nat Commun Article Detecting hydrodynamic fingerprints in the flow of electrons in solids constitutes a dynamic field of investigation in contemporary condensed matter physics. Most attention has been focused on the regime near the degeneracy temperature when the thermal velocity can present a spatially modulated profile. Here, we report on the observation of a hydrodynamic feature in the flow of quasi-ballistic degenerate electrons in bulk antimony. By scrutinizing the temperature dependence of thermal and electric resistivities, we detect a size-dependent departure from the Wiedemann-Franz law, unexpected in the momentum-relaxing picture of transport. This observation finds a natural explanation in the hydrodynamic picture, where upon warming, momentum-conserving collisions reduce quadratically in temperature both viscosity and thermal diffusivity. This effect has been established theoretically and experimentally in normal-state liquid (3)He. The comparison of electrons in antimony and fermions in (3)He paves the way to a quantification of momentum-conserving fermion-fermion collision rate in different Fermi liquids. Nature Publishing Group UK 2021-01-08 /pmc/articles/PMC7794374/ /pubmed/33420029 http://dx.doi.org/10.1038/s41467-020-20420-9 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Jaoui, Alexandre Fauqué, Benoît Behnia, Kamran Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony |
title | Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony |
title_full | Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony |
title_fullStr | Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony |
title_full_unstemmed | Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony |
title_short | Thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony |
title_sort | thermal resistivity and hydrodynamics of the degenerate electron fluid in antimony |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7794374/ https://www.ncbi.nlm.nih.gov/pubmed/33420029 http://dx.doi.org/10.1038/s41467-020-20420-9 |
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