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Title

Anharmonic dynamics in crystalline, glassy, and supercooled-liquid glycerol: A case study on the onset of relaxational behavior

AuthorsCuello, G. J. ; Bermejo, Francisco Javier ; Fayos, Rosa ; Fernández-Perea, Ricardo ; Criado, A.; Trouw, F.; Tam, C.; Schober, H.; Enciso, Eduardo ; Almarza, Noé G.
Issue Date1-Apr-1998
PublisherAmerican Physical Society
CitationPhysical Review B 57: 8254- 8263 (1998)
AbstractThe temperature dependence of the spectral distributions of the glass, crystalline, and supercooled-liquid phases of glycerol is investigated by means of neutron inelastic scattering. The importance of anharmonic effects is quantified by the temperature dependence of reduced spectral frequency moments. The onset of relaxational (i.e., stochastic, zero-frequency) motions in the supercooled liquid state is monitored by neutron quasielastic scattering. A substantial deviation of the observed linewidths from the hydrodynaimc prescription is observed and is interpreted at a microscopic level, by comparison with the crystalline phase. ©1998 American Physical Society
Description10 págs.; 8 figs.
Publisher version (URL)https://doi.org/10.1103/PhysRevB.57.8254
URIhttp://hdl.handle.net/10261/139982
DOI10.1103/PhysRevB.57.8254
Identifiersdoi: 10.1103/PhysRevB.57.8254
issn: 0163-1829
Appears in Collections:(CFMAC-IEM) Artículos
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