Self-energy and lifetime of Shockley and image states on Cu(100) and Cu(111): Beyond the GW approximation of many-body theory

Abstract

We report many-body calculations of the self-energy and lifetime of Shockley and image states on the (100) and (111) surfaces of Cu that go beyond the $GW$ approximation of many-body theory. The self-energy is computed in the framework of the GWΓapproximation by including short-range exchange-correlation (XC) effects both in the screened interaction W (beyond the random-phase approximation) and in the expansion of the self-energy in terms of W (beyond the GW approximation). Exchange-correlation effects are described within time-dependent density-functional theory from the knowledge of an adiabatic nonlocal XC kernel that goes beyond the local-density approximation.

arXiv comment8 pages, 5 figures, to appear in Phys. Rev. B

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Cited by in corpus (3)

• Physisorption kinetics of electrons at plasma boundaries
• Theory of inelastic lifetimes of surface-state electrons and holes at metal surfaces
• Embedding on to a one-dimensional crystal