%0 Journal Article
%T Boson peak and its relation to acoustic attenuation in glasses
%+ Laboratoire des colloïdes, verres et nanomatériaux (LCVN)
%A Ruffle, Benoit
%A Parshin, D. A.
%A Courtens, Eric
%A Vacher, René
%< avec comité de lecture
%Z LCVN:08-211
%@ 0031-9007
%J Physical Review Letters
%I American Physical Society
%V 100
%P 015501
%8 2008
%D 2008
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
%Z Physics [physics]/Condensed Matter [cond-mat]/Disordered Systems and Neural Networks [cond-mat.dis-nn]Journal articles
%X 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 nonacoustic vibrational modes at THz frequency, providing in many cases a comprehensive picture for a range of glass anomalies.
%G English
%L hal-00512617
%U https://hal.science/hal-00512617
%~ CNRS
%~ UNIV-MONTP2
%~ LCVN
%~ UNIV-MONTPELLIER
%~ UM1-UM2