Abstract
A semi-infinite spatially dispersive dielectric medium is re-examined. The analytical properties of the dielectric response similar to the Kramers-Kronig relations are proved in a q variable. This analysis permits one to introduce the surface energy-loss function, which generalizes the well-known expression Im{-1/[ε(ω)+1]} to the spatially dispersive case. The theory is illustrated by application to the hydrodynamical model of a semi-infinite medium with aluminum parameters. The reflected-electron surface energy-loss spectrum is obtained. The results are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 10663-10667 |
| Number of pages | 5 |
| Journal | Physical Review B |
| Volume | 49 |
| Issue number | 15 |
| DOIs | |
| State | Published - 1994 |
| Externally published | Yes |