Localization of phonons and low-frequency sound attenuation in layered crystals

Localization of phonons and low-frequency sound attenuation in layered crystals

It is shown that specific interference processes emerging in an anharmonic layered lattice in the localization regime leads to a considerable renormalization of the reciprocal phonon lifetime. This mechanism may dominate over the standard anharmonic mechanism. The coefficient of low-frequency sound...

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Veröffentlicht in:Low temperature physics (Woodbury, N.Y.) N.Y.), 1999-11, Vol.25 (11), p.912-916
Hauptverfasser: Chulkin, E. P., Zhernov, A. P., Kulagina, T. N.
Format: Artikel
Sprache:eng
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Zusammenfassung:It is shown that specific interference processes emerging in an anharmonic layered lattice in the localization regime leads to a considerable renormalization of the reciprocal phonon lifetime. This mechanism may dominate over the standard anharmonic mechanism. The coefficient of low-frequency sound attenuation in an insulator with diagonal disorder is discussed.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.593838