Phonon Heat Conduction in Corrugated Silicon Nanowires Below the Casimir Limit

Abstract : The thermal conductance of straight and corrugated monocrystalline silicon nanowires has been measured between 0.3~K and 5~K. The difference in the thermal transport between corrugated nanowires and straight ones demonstrates a strong reduction in the mean free path of the phonons. This averaged mean free path is remarkably smaller than the smaller diameter of the nanowire, evidencing a phonon thermal transport reduced below the Casimir limit. Monte Carlo simulations highlight that this effect can be attributed to significant multiple scattering of ballistic phonons occuring on the corrugated surfaces. This result suggests an original approach to transforming a monocrystalline material into a phonon glass.
Type de document :
Article dans une revue
Applied Physics Letters, American Institute of Physics, 2013, 103 (4), pp.043109. 〈10.1063/1.4816590〉
Liste complète des métadonnées

Littérature citée [38 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-00789770
Contributeur : Olivier Bourgeois <>
Soumis le : mercredi 17 avril 2013 - 17:06:26
Dernière modification le : mercredi 22 août 2018 - 01:08:45
Document(s) archivé(s) le : lundi 3 avril 2017 - 06:45:16

Fichiers

BlancTextCondMat.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Christophe Blanc, Ali Rajabpour, Sebastian Volz, Thierry Fournier, Olivier Bourgeois. Phonon Heat Conduction in Corrugated Silicon Nanowires Below the Casimir Limit. Applied Physics Letters, American Institute of Physics, 2013, 103 (4), pp.043109. 〈10.1063/1.4816590〉. 〈hal-00789770v2〉

Partager

Métriques

Consultations de la notice

437

Téléchargements de fichiers

238