Go to content
UR Home

Theory of Sound Attenuation in Glasses: The Role of Thermal Vibrations

URN to cite this document:
DOI to cite this document:
Fabian, Jaroslav ; Allen, Philip B.
PDF - Published Version
Date of publication of this fulltext: 05 Aug 2009 13:33


Sound attenuation and internal friction coefficients are calculated for a realistic model of amorphous silicon. It is found that, contrary to previous views, thermal vibrations can induce sound attenuation at ultrasonic and hypersonic frequencies that is of the same order or even larger than in crystals. The reason is the internal strain induced anomalously large Grüneisen parameters of the low-frequency resonant modes.

Owner only: item control page
  1. Homepage UR

University Library

Publication Server


Publishing: oa@ur.de
0941 943 -4239 or -69394

Dissertations: dissertationen@ur.de
0941 943 -3904

Research data: datahub@ur.de
0941 943 -5707

Contact persons