2024-03-29T11:24:27Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1403432020-01-28T14:15:08Zcom_10261_89com_10261_3com_10261_135com_10261_4col_10261_342col_10261_388
García-Hernández, M.
Bermejo, Francisco Javier
Fåk, B.
Martínez, J. L.
Enciso, Eduardo
Almarza, Noé G.
Criado, A.
2016-11-17T09:01:54Z
2016-11-17T09:01:54Z
1993-07-01
Physical Review B 48: 149- 160 (1993)
http://hdl.handle.net/10261/140343
10.1103/PhysRevB.48.149
http://dx.doi.org/10.13039/501100008737
The microscopic low-frequency dynamics of glassy selenium is investigated by means of the concurrent use of neutron inelastic scattering and computer simulations. A separation of the dynamic response in terms of intra- and interchain processes is achieved from the analysis of the simulation results. The S(Q,E) dynamic structure factors are analyzed in terms of the frequency moments or from a model scattering law, and the wave-vector dependence of the relevant quantities is established. Finally, the anomalous behavior of the heat capacity at moderately low temperatures is shown to be originated by mostly interchain interactions. © 1993 The American Physical Society.
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openAccess
Low-frequency excitations in glassy selenium: A comparison of neutron-scattering and molecular-dynamics results
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