2005/11/29 by M. Becker, Michael A. Becker, S. Crampin +2 · 25 citations
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic physics #Chemistry #Condensed matter physics #Electron #Electronic band structure #Molecular physics #Optics #Physics #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Scanning tunneling microscope #Scattering #Surface (topology) #Surface and Thin Film Phenomena #cond-mat.other
paper · pdf · doi:10.1103/physrevb.73.081402
published in Physical Review B 73(8) (American Physical Society) · 4 pages, 3 figures
arxiv created 2005/11/29 · openalex publication_date 2006/02/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a quantitative many-body analysis using the GW approximation of the decay rate \ensuremathΓ due to electron-electron scattering of excitations in the Shockley surface state band of Ag(111), as measured using the scanning tunneling microscope (STM). The calculations include the perturbing influence of the STM, which causes a Stark-shift of the surface state energy E and concomitant increase in \ensuremathΓ. We find \ensuremathΓ varies more rapidly with E than recently found for image potential states, where the STM has been shown to significantly affect measured lifetimes. For the Shockley states, the Stark shifts that occur under normal tunneling conditions are relatively small, and previous STM-derived lifetimes need not be corrected.