Role of occupied d bands in the dynamics of excited electrons and holes in Ag

Abstract

The role that occupied $d$ bands play in the inelastic lifetime of bulk and surface states in Ag is investigated from the knowledge of the quasiparticle self-energy. In the case of bulk electrons, $sp$ bands are taken to be free-electron like. For surface states, the surface band structure of $sp$ states is described with the use of a realistic one-dimensional hamiltonian. The presence of occupied $d$ states is considered in both cases by introducing a polarizable background. We obtain inelastic lifetimes of bulk electrons that are in good agreement with first-principles band-structure calculations. Our surface-state lifetime calculations indicate that the agreement with measured lifetimes of both crystal-induced and image-potential induced surface states on Ag(100) and Ag(111) is considerably improved when the screening of $d$ electrons is taken into account.

arXiv comment9 pages, 9 figures, to appear in Phys. Rev. B

References in corpus (9)

• Theory of inelastic lifetimes of low-energy electrons in metals
• Many-body Effects in Angle-resolved Photoemission: Quasiparticle Energy and Lifetime of a Mo(110) Surface State
• Role of bulk and surface phonons in the decay of metal surface states
• Lifetimes of image-potential states on copper surfaces
• Role of the intrinsic surface state in the decay of image states at a metal surface
• Self-energy of image states on copper surfaces
• Surface-state electron dynamics in noble metals
• The role of surface plasmons in the decay of image-potential states on silver surfaces
• Lifetime of d-holes at Cu surfaces: Theory and experiment

Cited by in corpus (7)

• Optical response of noble metal nanostructures: Quantum surface effects in crystallographic facets
• Theoretical analysis of STM-derived lifetimes of excitations in the Shockley surface state band of Ag(111)
• Lifetimes of Shockley electrons and holes at the Cu(111) surface
• Lifetimes of electrons in the Shockley surface state band of Ag(111)
• Theory of EELS in atomically thin metallic films
• Self-energy and lifetime of Shockley and image states on Cu(100) and Cu(111): Beyond the GW approximation of many-body theory
• Theory of inelastic lifetimes of surface-state electrons and holes at metal surfaces