Giant temperature effects in normal-emission photoelectron spectra from Ag(111) and Au(111)

Autor(en): Matzdorf, R
Paniago, R
Meister, G
Goldmann, A
Zubragel, C
Braun, J
Borstel, G
Stichwörter: angle resolved photoemission; BAND-STRUCTURE; Chemistry; Chemistry, Physical; ELECTRON; gold; LINE; low index single crystal surfaces; METALS; PHOTOEMISSION; Physics; Physics, Condensed Matter; RELATIVISTIC THEORY; silver; SOLIDS; SURFACES
Erscheinungsdatum: 1996
Herausgeber: ELSEVIER SCIENCE BV
Journal: SURFACE SCIENCE
Volumen: 352
Startseite: 670
Seitenende: 674
Zusammenfassung: 
The experimental determination of electronic energy bands E(k) from the kinematical analysis of angle-resolved photoelectron spectra is now nearly routine. In contrast only very few attempts have been made to quantitatively interpret peak intensities (going beyond the application of polarization selection rules), In this context we did investigate the influence of temperature T on peak intensities and linewidths, During that work we detected that at particular k-space points bulk direct transition intensities exhibit a `'giant'' T dependence, with temperature coefficients larger by an order of magnitude as compared to other k-space points nearby. We present such data and compare them to calculations performed within the one-step theory of photoemission. An interpretation is given by multiple scattering effects and a constructive final state interference.
Beschreibung: 
15th European Conference on Surface Science, LILLE, FRANCE, SEP 04-08, 1995
ISSN: 00396028
DOI: 10.1016/0039-6028(95)01209-5

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