Abstract
The delicate interplay between plasmonic excitations and interband transitions in noble metals is described by means of ab initio calculations and a simple model in which the conduction electron plasmon is coupled to the continuum of electron-hole pairs. Band-structure effects, especially the energy at which the excitation of the d-like bands takes place, determine the existence of a threshold plasmonic mode, which manifests itself in Ag as a sharp resonance experimentally observed at 3.8 eV. However, such a resonance does not appear in the spectra of the other noble metals. Here this different behavior is also analyzed, and an explanation is provided.
| Original language | English |
|---|---|
| Pages (from-to) | 8033-8042 |
| Number of pages | 10 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 61 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2000 |
| Externally published | Yes |