Journal article
Hole dynamics in noble metals
Publication Details
Authors: | Campillo, I.; Rubio, A.; Pitarke, J.; Goldmann, A.; Echenique, P. |
Publication year: | 2000 |
Journal: | Physical Review Letters |
Pages range : | 3241-3244 |
Journal acronym: | PRL |
Volume number: | 85 |
ISSN: | 0031-9007 |
eISSN: | 1079-7114 |
Abstract
Hole dynamics;in noble metals (Cu and An) is investigated by means of first-principles many-body calculations. While holes in a free-electron gas are known to live shorter than electrons with the same excitation energy, our results indicate that d holes in noble metals exhibit longer inelastic lifetimes than excited sp electrons, in agreement with experiment. The density of states available for d-hole decay is larger than that for the decay of excited electrons; however, the small overlap between d and sp states below the Fermi level increases the d-hole lifetime. The impact of d-hole dynamics on electron-hole correlation effects is also addressed.
Hole dynamics;in noble metals (Cu and An) is investigated by means of first-principles many-body calculations. While holes in a free-electron gas are known to live shorter than electrons with the same excitation energy, our results indicate that d holes in noble metals exhibit longer inelastic lifetimes than excited sp electrons, in agreement with experiment. The density of states available for d-hole decay is larger than that for the decay of excited electrons; however, the small overlap between d and sp states below the Fermi level increases the d-hole lifetime. The impact of d-hole dynamics on electron-hole correlation effects is also addressed.
