A model for low frequency Raman scattering in hydrogen- bonded solids

We briefly review the properties of the disorder-induced light scattering spectrum observed in Raman scattering experiments from disordered solids; in particular, we concentrate on the region ω→0. From this analysis it appears that ice I h shows an anomalous behaviour which may be ascribed to the co...

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Bibliographic Details
Published in:Journal of molecular structure 1991-11, Vol.250 (2), p.395-401
Main Authors: Dimartino, V., Mazzacurati, V., Merlo, V., Ruocco, G.
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Molecular spectra
Physics
Raman and rayleigh spectra (including optical scattering)
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Summary:We briefly review the properties of the disorder-induced light scattering spectrum observed in Raman scattering experiments from disordered solids; in particular, we concentrate on the region ω→0. From this analysis it appears that ice I h shows an anomalous behaviour which may be ascribed to the contribution of multiphonon terms; in this paper these are introduced via an explicit non-linear coupling between radiation and matter. The results of this model are reported, and the underlying physical mechanism examined in some detail. Even if the results are somewhat qualitative in character, they give indirect evidence for the presence of activated hexagonal hydrogen loops in ice I h.
ISSN:0022-2860
1872-8014
DOI:10.1016/0022-2860(91)85043-3