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Thermal transport in glassy selenium: The role of low-frequency librations

AuthorsBermejo, Francisco Javier ; Enciso, Eduardo ; Criado, A.; Martínez, J. L. ; García Hernández, M.
Issue Date1-Apr-1994
PublisherAmerican Physical Society
CitationPhysical Review B 49: 8689-8695 (1994)
AbstractThe experimental curves giving the temperature dependence of the thermal conductivity of glassy selenium are considered in detail. The observed behavior can be taken into account quantitatively if the densities of states for short-wavelength phonons as well as for low-energy librations arising from computer simulations are used for the calculations. In particular, it is shown that the lowest frequency excitations of a chain of selenium atoms can give due account of the plateau observed at temperatures about 2-10 K. The implications of the present findings for the current debate regarding the mechanisms for thermal transport in glasses are finally discussed. © 1994 The American Physical Society.
Description7 págs.; 3 figs.
Publisher version (URL)https://doi.org/10.1103/PhysRevB.49.8689
Identifiersdoi: 10.1103/PhysRevB.49.8689
issn: 0163-1829
Appears in Collections:(CFMAC-IEM) Artículos
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