✦ LIBER ✦

Plateau in temperature dependence of thermal conductivity of glasses due to indirect phonon-phonon interaction

✍ Scribed by V.S. Lutovinov

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 205 KB
Volume: 169
Category: Article
ISSN: 0921-4526
DOI: 10.1016/0921-4526(91)90328-c

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✦ Synopsis

It is shown that the low lying excitations of glasses, the so called two level systems (TLS), being in a virtual state induoe indirect phonon-phonon interactions of a coherent type. These indirect 3-phonon interactions are resDonsible for the Dlateau in temDerature deDendence of thermal conductivity hollowed by a 1in"ear increase i& 8 at higher temperatures @?(T),T).

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