info:eu-repo/semantics/article
Surface-electronic-state effects in electron emission from the Be(0001) surface
Fecha
2011-07Registro en:
Archubi, Claudio Darío; Gravielle, Maria Silvia; Silkin, V. M.; Surface-electronic-state effects in electron emission from the Be(0001) surface; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 84; 1; 7-2011; 1-5; 012901
1050-2947
CONICET Digital
CONICET
Autor
Archubi, Claudio Darío
Gravielle, Maria Silvia
Silkin, V. M.
Resumen
We study the electron emission produced by swift protons impinging grazingly on a Be(0001) surface. The process is described within a collisional formalism using the band-structure-based (BSB) approximation to represent the electron-surface interaction. The BSB model provides an accurate description of the electronic band structure of the solid and the surface-induced potential. Within this approach we derive both bulk and<br />surface electronic states, with these latter characterized by a strong localization at the crystal surface. We found that such surface electronic states play an important role in double-differential energy- and angle-resolved electron emission probabilities, producing noticeable structures in the electron emission spectra.