Acoustic Nature of the Boson Peak in Vitreous Silica

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dc.creatorMasciovecchio, C.
dc.creatorMazzacurati, V.
dc.creatorMonaco, G.
dc.creatorRuocco, G.
dc.creatorScopigno, T.
dc.creatorSette, F.
dc.creatorBenassi, P.
dc.creatorCunsolo, A.
dc.creatorFontana, A.
dc.creatorKrisch, M.
dc.creatorMermet, A.
dc.creatorMontagna, M.
dc.creatorRossi, F.
dc.creatorSampoli, M.
dc.creatorSignorelli, G.
dc.creatorVerbeni, R.
dc.date1999-11-02
dc.date.accessioned2026-07-07T03:14:58Z
dc.date.available2026-07-07T03:14:58Z
dc.descriptionNew temperature dependent inelastic x-ray (IXS) and Raman (RS) scattering data are compared to each other and with existing inelastic neutron scattering data in vitreous silica (v-SiO_2), in the 300 - 1775 K region. The IXS data show collective propagating excitations up to Q=3.5 nm^-1. The temperature behaviour of the excitations at Q=1.6 nm^-1 matches that of the boson peak found in INS and RS. This supports the acoustic origin of the excess of vibrational states giving rise to the boson peak in this glass.
dc.description10 pages and 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9911022
dc.identifierhttp://arxiv.org/abs/cond-mat/9911022
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/29879
dc.subjectDisordered Systems and Neural Networks
dc.titleAcoustic Nature of the Boson Peak in Vitreous Silica
dc.typetext

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