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1992 | 81 | 1 | 33-37
Article title

Electron Damping in Surface Studies

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EN
Abstracts
EN
Electron correlation is responsible for finite lifetimes of excited electrons in crystals. Lifetime energy dependence can be obtained for infinite jellium model and only very recently the first results for an infinite crystal have been evaluated (GW approximation). Here, a phenomenological approach, based on Green functions, is presented. Broadening of local densities of electron states as well as that of angular-resolved photoemission (ARUPS) peaks and very-low-energy-electron diffraction (VLEED) profiles, due to the imaginary component of the optical potential is reviewed and interpreted. Anisotropy of electron damping on crystal surfaces has been found in VLEED as a result of electron channeling along the densely packed (111) surface atomic planes in fcc crystals. Interpretation of peak widths in VLEED-and ARUPS-profiles provides a mean to learn about damping of electrons, excited on crystal surface.
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EN
Publisher

Year
Volume
81
Issue
1
Pages
33-37
Physical description
Dates
published
1992-01
received
1991-05-21
Contributors
author
  • Institute of Physics, Czechoslovak Academy of Sciences, Cukrovarnická 10, 162 00 Praha 6, Czecho-Slovakia
References
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv81z103kz
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