Surface and bulk contribution to Cu(111) quantum efficiency

Stefania Pagliara, Gabriele Ferrini, Emanuele Pedersoli, Gianluca Galimberti, Matteo Montagnese, Stefano Dal Conte, Fulvio Parmigiani, E. Pedersoli, C. M.R. Greaves, W. Wan, C. Coleman-Smith, H. A. Padmore, F. Parmigiani

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

14 Citazioni (Scopus)

Abstract

The quantum efficiency (QE) of Cu(111) is measured for different impinging light angles with photon energies just above the work function. We observe that the vectorial photoelectric effect, an enhancement of the QE due to illumination with light with an electric vector perpendicular to the sample surface, is stronger in the more surface sensitive regime. This can be explained by a contribution to photoemission due to the variation in the electromagnetic potential at the surface. The contributions of bulk and surface electrons can then be determined.
Lingua originaleEnglish
pagine (da-a)N/A-N/A
RivistaApplied Physics Letters
Volume93
DOI
Stato di pubblicazionePubblicato - 2008

Keywords

  • COPPER
  • ELECTRONIC STATES
  • INTERFACE
  • METALS
  • PHOTOEMISSION
  • surface effect

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