Inverse lifetime of the surface and image states on Au(111)

Authors
Chulkov, EV Machado, M Silkin, VM
Citation
Ev. Chulkov et al., Inverse lifetime of the surface and image states on Au(111), VACUUM, 61(2-4), 2001, pp. 95-100
Citations number
33
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
VACUUM
ISSN journal
0042207X → ACNP
Volume
61
Issue
2-4
Year of publication
2001
Pages
95 - 100
Database
ISI
SICI code
0042-207X(20010514)61:2-4<95:ILOTSA>2.0.ZU;2-L
Abstract
We evaluate the lifetimes of the surface and the first image state of the ( 1 1 1) surface of gold, the image state having the peculiarity of being a r esonant state. The sell-energy of the excited quasiparticle is calculated w ithin the GW approximation. A one-dimensional potential is used to obtain t he single-particle wave functions by solving the Schrodinger equation. The screened Coulomb interaction is calculated using the RPA approximation for the response function. Our computed linewidths are in very good agreement w ith available STM and two-photon photoemission experimental results. (C) 20 01 Elsevier Science Ltd. All rights reserved.