Role of elastic scattering in electron dynamics at ordered alkali overlayers on Cu(111).

نویسندگان

  • C Corriol
  • V M Silkin
  • D Sánchez-Portal
  • A Arnau
  • E V Chulkov
  • P M Echenique
  • T von Hofe
  • J Kliewer
  • J Kröger
  • R Berndt
چکیده

Scanning tunneling spectroscopy of p(2 x 2) Cs and Na ordered overlayers on Cu(111) reveals similar line widths of quasi-two-dimensional quantum well states despite largely different binding energies. Detailed calculations show that 50% of the line widths are due to electron-phonon scattering while inelastic electron-electron scattering is negligible. The mechanism of enhanced elastic scattering due to Brillouin zone backfolding contributes the remaining width.

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عنوان ژورنال:
  • Physical review letters

دوره 95 17  شماره 

صفحات  -

تاریخ انتشار 2005