Low-temperature phonon damping in vitreous silica explored by UV Brillouin spectroscopy (Articolo in rivista)

Type
Label
  • Low-temperature phonon damping in vitreous silica explored by UV Brillouin spectroscopy (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1080/14786430600891360 (literal)
Alternative label
  • Baldi, G; Caponi, S; Fontana, A; Benassi, P; Giugni, A; Nardone, M; Sampoli, M (2007)
    Low-temperature phonon damping in vitreous silica explored by UV Brillouin spectroscopy
    in Philosophical magazine (2003, Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Baldi, G; Caponi, S; Fontana, A; Benassi, P; Giugni, A; Nardone, M; Sampoli, M (literal)
Pagina inizio
  • 603 (literal)
Pagina fine
  • 612 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 87 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3-5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Trent, Dept Phys, I-38050 Trento, Italy; Univ Aquila, Dept Phys, I-67100 Laquila, Italy; Univ Florence, Dept Energet, I-50139 Florence, Italy; Univ Roma La Sapienza, CNR, INFM, CRS SOFT, I-00185 Rome, Italy (literal)
Titolo
  • Low-temperature phonon damping in vitreous silica explored by UV Brillouin spectroscopy (literal)
Abstract
  • The recently developed technique of Brillouin ultraviolet scattering is used to measure phonon dispersion and damping in the prototypical strong glass v-SiO2. Results on the low temperature (T similar to 10-100 K) sound attenuation at a frequency of similar to 66GHz are presented. The comparison between a model, which takes into account dynamical processes (thermally activated relaxations and the interaction with the bath of thermal vibrations), and the experimental data indicates the presence of a strong static contribution in the region explored by Ultraviolet radiation, supporting the presence of a transition between static and dynamic attenuation mechanisms at a frequency of similar to 100GHz. (literal)
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