| Título: | Wavenumber dependence of the energy loss function of graphite and aluminium |
| Autores: |
Planes, Domingo J. García Molina, Rafael Abril Sánchez, Isabel Arista, Néstor R. |
| Fecha: |
2012-11-26 2012-11-26 1996-11 |
| Publicador: | RUA Docencia |
| Fuente: |
 |
| Tipo: | info:eu-repo/semantics/article |
| Tema: |
Dielectric function Electron energy loss spectroscopy Energy loss function Física Aplicada |
| Descripción: |
The energy loss function of a material is a key parameter in the dielectric formalism used to describe the optical spectra and the excitations produced by swift charges in solids. Modelling the experimental energy loss function as a sum of Mermin type functions in the optical limit (i.e., at zero momentum transfer), we have calculated its dependence on the momentum transfer. We compare the result with available experimental data for graphite and aluminium and with other theoretical models. We find a reasonably good agreement of our results with these data, and better agreement than is obtained with other models. Spanish DGICYT (Projects PB92-0341 and PB93-1125). N.R.A acknowledges the support of the Generalitat Valenciana through the Programa PROPIO. |
| Idioma: | Inglés |
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