Journal article
Interference of direct transitions and surface emission in ARPES studied by changing the light incidence angle



Publication Details
Authors:
Michalke, T.; Gerlach, A.; Berge, K.; Matzdorf, R.; Goldmann, A.
Publication year:
2000
Journal:
Physical Review B
Pages range:
10544-10547
Journal acronym:
Phys. Rev.
Volume number:
62
Start page:
10544
End page:
10547
ISSN:
1098-0121

Abstract
The contributions of direct transitions [f\(A) over right arrow.(p) over right arrow \i] and surface emission [f\div (A) over right arrow \i] in angle-resolved photoelectron spectroscopy spectra can be varied considerably by changing the incidence angle of p-polarized light. Due to interference of both contributions line shape and asymmetry of certain peaks change dramatically as a function of light incidence direction. This effect has been studied in detail at an s.p band of copper and a photon energy of h omega =21.2 eV. Our experimental data can be explained quantitatively within a physically transparent model calculation, which supplies a criterion to distinguish between bulk direct and surface emission.


Authors/Editors

Last updated on 2019-01-11 at 16:05