Title: Interaction of quasilocal harmonic modes and boson peak in glasses
Authors: Parshin, DA
Laermans, Christiane #
Issue Date: Apr-2001
Publisher: American physical soc
Series Title: Physical Review B vol:6313 issue:13 pages:2203,NIL-2203,NIL
Abstract: The direct, proportionality relation between the boson peak maximum in glasses omega (b) and the Ioffe-Regel crossover frequency for phonons omega (d) is established. For several investigated materials omega (b) = (1.5 +/- 0.1)omega (d). At frequency omega (d) the mean free path of the phonons l becomes equal to their wavelength because of strong resonant scattering on quasilocal harmonic oscillators. We prove that the established correlation between omega (b) and omega (d) holds in the general case and is a direct consequence of bilinear coupling of quasilocal oscillators with the strain field.
ISSN: 2469-9950
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Semiconductor Physics Section
# (joint) last author

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