Anharmonic phonon decay in TeO2: confirmation of Herring's theory

Authors
Damen, EPN Arts, AFM de Wijn, HW
Citation
Epn. Damen et al., Anharmonic phonon decay in TeO2: confirmation of Herring's theory, PHYSICA B, 263, 1999, pp. 713-715
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
713 - 715
Database
ISI
SICI code
0921-4526(199903)263:<713:APDITC>2.0.ZU;2-B
Abstract
The decay time tau of longitudinal phonons propagating along the [001] axis in a single crystal of paratellurite (TeO2) is found to vary with the freq uency and the temperature as 1/tau = w(a)T(b) with a = 1.84 +/- 0.20 and b = 2.81 +/- 0.20 below about 53 K. and as omega(a)T with a = 1.87 +/- 0.20 a bove this temperature. These results confirm Herring's theory for anharmoni c phonon decay in anisotropic crystals. (C) 1999 Elsevier Science B.V. All rights reserved.