A self-consistent optical potential theory for atoms in solids

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

We develop an approximation for the optical potential in a solid, valid at intermediate energies, i.e. energies greater than 50 eV. The present approximation for the optical potential builds on the GW-expression. We separate the RPA polarization propagator into a core electron and a valence electron, and can then achieve a corresponding separation of the optical potential. We apply this method to electron-Ne and -Ar elastic scatterings and find a satisfactory agreement with the observed results. We also study the importance of self-consistency and the sensitivity to a parameter, the average excitation energy.

Detaljer

Författare
  • Takashi Fujikawa
  • Keisuke Hatada
  • Tetsuro Yikegaki
  • Lars Hedin
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Den kondenserade materiens fysik
Originalspråkengelska
Sidor (från-till)649-655
TidskriftJournal of Electron Spectroscopy and Related Phenomena
Volym88-91
StatusPublished - 1998
PublikationskategoriForskning
Peer review utfördJa