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arXiv · 0711.0461

The Boson Peak and its Relation with Acoustic Attenuation in Glasses

B. Rufflé·D. A. Parshin·E. Courtens·R. Vacher
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Abstract

Experimental results on the density of states and on the acoustic modes of glasses in the THz region are compared to the predictions of two categories of models. A recent one, solely based on an elastic instability, does not account for most observations. Good agreement without adjustable parameters is obtained with models including the existence of non-acoustic vibrational modes at THz frequency, providing in many cases a comprehensive picture for a range of glass anomalies.

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B. Rufflé, D. A. Parshin, E. Courtens, R. Vacher. 2007-11-03. The Boson Peak and its Relation with Acoustic Attenuation in Glasses. https://doi.org/10.1103/physrevlett.100.015501

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