Article
Thermal transport in glassy selenium: The role of low-frequency librations
Author/s | Bermejo, F. J.
Enciso, E. Criado Vega, Alberto Martínez, J.L. García Hernández, M. |
Department | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Publication Date | 1994 |
Deposit Date | 2017-04-19 |
Published in |
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Abstract | The 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 ... The 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 |
Funding agencies | Dirección General de Investigación Científica y Técnica (DGICYT). España |
Project ID. | PB92-0114-C03 |
Citation | Bermejo, F.J., Enciso, E., Criado Vega, A., Martínez, J.L. y García Hernández, M. (1994). Thermal transport in glassy selenium: The role of low-frequency librations. Physical Review B-Condensed Matter, 49 (13), 8689-8695. |
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