Effect of temperature on the vibrational density of states in vitreous SiO2: A Raman study (Articolo in rivista)

Type
Label
  • Effect of temperature on the vibrational density of states in vitreous SiO2: A Raman study (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.76.092201 (literal)
Alternative label
  • Caponi, S; Fontana, A; Rossi, F; Baldi, G; Fabiani, E (2007)
    Effect of temperature on the vibrational density of states in vitreous SiO2: A Raman study
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Caponi, S; Fontana, A; Rossi, F; Baldi, G; Fabiani, E (literal)
Pagina inizio
  • 1 (literal)
Pagina fine
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prb.aps.org/abstract/PRB/v76/i9/e092201 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 76 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 092201 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Trent, Dipartimento Fis, I-38050 Trento, Italy; Univ Roma La Sapienza, CNR, INFM, CRS SOFT, I-00185 Rome, Italy; European Synchrotron Radiat Facil, CNR, OGG, CRS SOFT, F-38043 Grenoble, France; CEA, LETI Minatec, Dept Technol Biol & Sante, Grenoble 9, France (literal)
Titolo
  • Effect of temperature on the vibrational density of states in vitreous SiO2: A Raman study (literal)
Abstract
  • Raman scattering measurements of vitreous SiO2 were performed over a wide range of temperatures in order to study the behavior of the boson peak and the quasielastic scattering. The analysis of quasielastic contribution in the framework of the Jackle model demonstrates that the quasielastic excess and the acoustic attenuation have the same physical origin. Moreover and even more importantly we found that the boson peak decrease, which is observed at increasing temperature, is fully explained by the modification of the elastic constants. (literal)
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