100 citations · 374 across the 8 of their papers we have counts for
5 papers · 1 filter
Low-frequency vibrational spectroscopy of glasses
Benoit Rufflé, Marie Foret, Bernard Hehlen
Atomic vibrations in perfect, slightly defective or mixed crystals are to a large extent well understood since many decades. Theoretical descriptions are thus in excellent agreemen…
Scaling the Temperature-dependent Boson Peak of Vitreous Silica with the high-frequency Bulk Modulus derived from Brillouin Scattering Data
B. Rufflé, S. Ayrinhac, E. Courtens +4
The position and strength of the boson peak in silica glass vary considerably with temperature . Such variations cannot be explained solely with changes in the Debye energy. New…
Hypersound damping in vitreous silica measured by picosecond acoustics
A. Devos, M. Foret, S. Ayrinhac +2
The attenuation of longitudinal acoustic phonons up to frequencies nearing 250 GHz is measured in vitreous silica with a picosecond optical technique. Taking advantage of interfere…
Anharmonic vs. relaxational sound damping in glasses: II. Vitreous silica
R. Vacher, E. Courtens, M. Foret
The temperature dependence of the frequency dispersion in the sound velocity and damping of vitreous silica is reanalyzed. Thermally activated relaxation accounts for the sound att…
Anharmonic vs. relaxational sound damping in glasses: I. Brillouin scattering from densified silica
E. Rat, M. Foret, G. Massiera +4
This series discusses the origin of sound damping and dispersion in glasses. In particular, we address the relative importance of anharmonicity versus thermally activated relaxatio…