MEAN FREE-PATH OF HIGH-FREQUENCY ACOUSTIC EXCITATIONS IN GLASSES WITHAPPLICATION TO VITREOUS SILICA

Authors
VACHER R PELOUS J COURTENS E
Citation
R. Vacher et al., MEAN FREE-PATH OF HIGH-FREQUENCY ACOUSTIC EXCITATIONS IN GLASSES WITHAPPLICATION TO VITREOUS SILICA, Physical review. B, Condensed matter, 56(2), 1997, pp. 481-484
Citations number
37
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
56
Issue
2
Year of publication
1997
Pages
481 - 484
Database
ISI
SICI code
0163-1829(1997)56:2<481:MFOHAE>2.0.ZU;2-D
Abstract
Direct spectroscopic information on the frequency and temperature depe ndences of acoustic-phonon damping in vitreous silica is reconsidered. It points to the essential role played by Rayleigh scattering of the phonons, in quantitative agreement with thermal properties at low temp eratures. A picture is proposed that consistently unifies thermal prop erties with all the available spectroscopic results.