On the phonon Poiseuille flow in quasi-one dimensional crystal

Authors
Maynard, R Smontara, A Lasjaunias, JC
Citation
R. Maynard et al., On the phonon Poiseuille flow in quasi-one dimensional crystal, PHYSICA B, 263, 1999, pp. 678-682
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
263
Year of publication
1999
Pages
678 - 682
Database
ISI
SICI code
0921-4526(199903)263:<678:OTPPFI>2.0.ZU;2-0
Abstract
We report on thermal conductivity measurements of the quasi-one dimensional single crystals (Ta1-xNbxSe4)(2)I (x = 0, 0.008, 0.01) at low temperatures . In the vicinity of 1 and 2 K for pure and 1 at% Nb doped samples, the the rmal conductivity (kappa(T)) shows a very sharp peak. The presence of the p eak in these systems is explained by a phonon Poiseuille flow, originating from their strong anharmonicity, amplified by the lattice anisotropy. (C) 1 999 Elsevier Science B.V. All rights reserved.