Indirect bulk plasmon generation by electrons reflected above the solid surface

V. U. Nazarov*, Yu V. Luniakov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We demonstrate that the spatial dispersion of the dielectric response provides the mechanism to excite the bulk plasmon in a solid by incident electrons not penetrating into the bulk, which is the process inhibited in the nondispersive models. In this case the bulk plasmon generation is described by the surface energy-loss function, but not by the bulk one -Im[1/ε(q,ω)], while the latter must be used when the probing electrons do not penetrate the bulk. Comparison of the indirectly excited bulk plasmon, obtained for the surface of aluminum, with experimental spectrum shows that the effect is sufficiently strong to be accounted for in the interpretation of the reflection electron-energy-loss spectroscopy data of surface structures.

Original languageAmerican English
Pages (from-to)12414-12418
Number of pages5
JournalPhysical Review B
Volume52
Issue number16
DOIs
StatePublished - 1995
Externally publishedYes

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