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Statut |
Confirmé |
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Série |
SEM-EXCEP |
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Domaines |
cond-mat |
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Date |
Jeudi 3 Juillet 2025 |
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Heure |
14:00 |
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Institut |
ESPCI |
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Salle |
Room Charpak, entrance building, ground floor |
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Nom de l'orateur |
Behnia |
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Prenom de l'orateur |
Kamran |
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Addresse email de l'orateur |
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Institution de l'orateur |
Laboratoire de Physique et Etude de Matériaux, ESPCI, 75005 Paris, France |
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Titre |
Heat propagation in liquid 3He and metallic Fermi liquids |
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Résumé |
Normal liquid 3He inspired Landau’s Fermi liquid theory. What has been overlooked, however, is that fact that the agreement between this theory and the experimental data is restricted to very low temperature. On the other hand, the experimentally measured thermal conductivity can be explained as the sum of two contributions: one by quasi-particles and another by sound [2]. The first component has been known for decades. The second is known as zero sound [2], but in the hydrodynamic limit, when the collision rate exceeds the sound frequency. Propagation of heat by sound in a quantum liquid shall not be a surprise given the longstanding relevance of the Bridgman formula for thermal conductivity of classical liquids [3]. The case of 3He has implications for understanding the temperature dependence of transport coefficients in metals, ordinary or strange.
[1] K. Behnia & K. Trachenko, Nature Commun. 15, 1771 (2024).
[2] F. Albergamo et al., Phys. Rev. Lett. 99, 205301 (2007).
[3] P. W. Bridgman, Proc. Am. Acad. Arts Sci. 59, 141–169 (1923). |
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Numéro de preprint arXiv |
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Commentaires |
The Zoom Education link will be provided upon registration via the mailing list at seminaires-lpem@espci.fr. |
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Fichiers attachés |
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