Measurements of intrinsic linewidth versus parallel momentum of image-potential states on Ag(100)

Claudio Giannetti, Stefania Pagliara, Gabriele Ferrini, Francesco Banfi, Gianluca Galimberti, Daniele Fausti, Fulvio Parmigiani

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

Abstract

Intrinsic linewidths of electronic image-potential states versus the momentum parallel to the surface on Ag(1 0 0) have been measured with angle resolved two-photon photoemission using the time of flight technique. The influence of the time of flight spectrometer angular acceptance on intrinsic linewidth measurements is taken into account and a proper data analysis is proposed. The inverse linewidth as a function of parallel momentum is compared with time-resolved measurements of image-state lifetimes on Ag(1 0 0) and Cu(1 0 0) reported in the literature. The data analysis shows that decay dynamics of image potential states in Ag and Cu may be determined by different physical mechanisms.
Lingua originaleEnglish
pagine (da-a)502-507
Numero di pagine6
RivistaSurface Science
DOI
Stato di pubblicazionePubblicato - 2004

Keywords

  • 2-photon photoemision
  • image states
  • lifetimes
  • silver
  • spectroscopy

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