Theory of inelastic lifetimes of surface-state electrons and holes at metal surfaces

Details Theory of inelastic lifetimes of surface-state electrons and holes at metal surfaces Theory of inelastic lifetimes of surface-state electrons and holes at metal surfaces

2008-04-24

arxiv.org/abs/0804.3918v1

Physics

Condensed Matter

Materials Science

17 pages, 7 figures, to appear in J Phys-Condens Mat

Scientific paper

10.1088/0953-8984/20/30/304207

After the early suggestion by John Pendry to probe unoccupied bands at surfaces through the time reversal of the photoemission process, the inverse-photoemission technique yielded the first conclusive experimental evidence for the existence of image-potential bound states at metal surfaces and has led over the last two decades to an active area of research in condensed-matter and surface physics. Here we describe the current status of the many-body theory of inelastic lifetimes of these image-potential states and also the Shockley surface states that exist near the Fermi level in the projected bulk band gap of simple and noble metals. New calculations of the self-energy and lifetime of surface states on Au surfaces are presented as well, by using the $GW\Gamma$ approximation of many-body theory.

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