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Contribution of the terahertz vibrations to the high-temperature thermal conductivity of vitreous silica (Articolo in rivista)
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- Label
- Contribution of the terahertz vibrations to the high-temperature thermal conductivity of vitreous silica (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1080/14786430802438192 (literal)
- Alternative label
Baldi, G; Fabiani, E; Fontana, A; Giordano, VM; Monaco, G; Ruocco, G; Sette, F (2008)
Contribution of the terahertz vibrations to the high-temperature thermal conductivity of vitreous silica
in Philosophical magazine (2003, Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Baldi, G; Fabiani, E; Fontana, A; Giordano, VM; Monaco, G; Ruocco, G; Sette, F (literal)
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- \"[Baldi, G.] ESRF, INFM, CNR, CRS SOFT OGG, Grenoble, France; [Fabiani, E.] CEA LETI Minatec, Grenoble 9, France; [Fontana, A.] Univ Trent, Dept Phys, Trento, Italy; [Fontana, A.; Ruocco, G.] Univ Roma La Sapienza, INFM, CNR, CRS SOFT, Rome, Italy; [Giordano, V. M.; Monaco, G.; Sette, F.] European Synchrotron Radiat Facil, F-38043 Grenoble, France; [Ruocco, G.] Univ Roma La Sapienza, Dept Phys, I-00185 Rome, Italy (literal)
- Titolo
- Contribution of the terahertz vibrations to the high-temperature thermal conductivity of vitreous silica (literal)
- Abstract
- A combined inelastic X-ray and neutron scattering experiment is performed on the prototypical glass vitreous silica. The complementarity of the two techniques is exploited to determine the dynamic structure factor in a wide range of energies and wavevectors. The vibrational-mode spectral density is then used to compute the high-temperature thermal conductivity. The acoustic-like modes persisting at THz frequencies are shown to represent a relevant heat conduction channel, although they cannot account for the entire thermal conductivity. (literal)
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