Linear dispersion of transverse high-frequency phonons in vitreous silica
- 15 April 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 27 (8), 5196-5198
- https://doi.org/10.1103/physrevb.27.5196
Abstract
Using phonon interference in thin films, we have measured the dispersion curve of transverse phonons in vitreous silica. A linear dispersion was found up to 450 GHz. This result has important implications for theories on the specific heat and thermal conductivity of glasses and is consistent with recent model calculations of phonons in a glass.Keywords
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