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Title: Surface-electronic-state effects in electron emission from the Be(0001) surface

Abstract

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 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.

Authors:
 [1];  [1];  [2];  [3];  [4];  [4]
  1. Instituto de Astronomia y Fisica del Espacio, casilla de correo 67, sucursal 28, C1428EGA, Buenos Aires (Argentina)
  2. (Argentina)
  3. Donostia International Physics Center, E-20018 San Sebastian (Spain)
  4. (Spain)
Publication Date:
OSTI Identifier:
22051310
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 1; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 74 ATOMIC AND MOLECULAR PHYSICS; BERYLLIUM; CRYSTALS; ELECTRON EMISSION; ELECTRON SPECTRA; ELECTRONS; EMISSION SPECTRA; PARTICLE INTERACTIONS; PROTONS; SOLIDS; SURFACES

Citation Formats

Archubi, C. D., Gravielle, M. S., Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Silkin, V. M., Departamento de Fisica de Materiales, Facultad de Ciencias Quimicas, Universidad del Pais Vasco, Apartado 1072, E-20080 San Sebastian, and IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao. Surface-electronic-state effects in electron emission from the Be(0001) surface. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.012901.
Archubi, C. D., Gravielle, M. S., Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Silkin, V. M., Departamento de Fisica de Materiales, Facultad de Ciencias Quimicas, Universidad del Pais Vasco, Apartado 1072, E-20080 San Sebastian, & IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao. Surface-electronic-state effects in electron emission from the Be(0001) surface. United States. doi:10.1103/PHYSREVA.84.012901.
Archubi, C. D., Gravielle, M. S., Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Silkin, V. M., Departamento de Fisica de Materiales, Facultad de Ciencias Quimicas, Universidad del Pais Vasco, Apartado 1072, E-20080 San Sebastian, and IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao. Fri . "Surface-electronic-state effects in electron emission from the Be(0001) surface". United States. doi:10.1103/PHYSREVA.84.012901.
@article{osti_22051310,
title = {Surface-electronic-state effects in electron emission from the Be(0001) surface},
author = {Archubi, C. D. and Gravielle, M. S. and Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires and Silkin, V. M. and Departamento de Fisica de Materiales, Facultad de Ciencias Quimicas, Universidad del Pais Vasco, Apartado 1072, E-20080 San Sebastian and IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao},
abstractNote = {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 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.},
doi = {10.1103/PHYSREVA.84.012901},
journal = {Physical Review. A},
issn = {1050-2947},
number = 1,
volume = 84,
place = {United States},
year = {2011},
month = {7}
}