Lifetimes of electrons in the Shockley surface state band of Ag(111)
M. Becker, S. Crampin, R. Berndt
Abstract
We present a theoretical many-body analysis of the electron-electron (e-e) inelastic damping rate Γ of electron-like excitations in the Shockley surface state band of Ag(111). It takes into account ab-initio band structures for both bulk and surface states. Γ is found to increase more rapidly as a function of surface state energy E than previously reported, thus leading to an improved agreement with experimental data.
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