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Title

High-frequency collective excitations in molten and glassy Te studied by inelastic neutron scattering

AuthorsRuiz-Martín, M.D.; Jiménez-Ruiz, M. ; Bermejo, Francisco Javier ; Fernández-Perea, Ricardo
Issue Date20-Mar-2006
PublisherAmerican Physical Society
CitationPhysical Review B - Condensed Matter and Materials Physics 73: 094201 (2006)
AbstractThe spectra of collective excitations of liquid and glassy tellurium have been studied by means of inelastic neutron scattering. Here we report on the dynamics of liquid Te as measured at two different temperatures, just above melting (Tm =723 K) and at ∼1000 K as well as the glass that is studied at room temperature. Estimates for the velocity of propagating excitations for both temperatures have been obtained from the experimental data, and a contrasting behavior is found with respect to anomalies shown by the adiabatic sound velocity measured by ultrasound methods. The origin of such differences is finally discussed. © 2006 The American Physical Society.
Description7 págs.; 5 figs.; 1 tab. ; PACS number s : 61.25.Mv, 61.43.Er, 61.20.Lc, 61.12. q
http://dx.doi.org/10.1103/PhysRevB.73.094201
URIhttp://hdl.handle.net/10261/140321
DOI10.1103/PhysRevB.73.094201
Identifiersdoi: 10.1103/PhysRevB.73.094201
issn: 1098-0121
Appears in Collections:(CFMAC-IEM) Artículos
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