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Lifetime Effects of Xenon Adsorption on the Image-Potential States of Ru(0001)

  • W. Berthold
  • I. L. Shumay
  • P. Feulner
  • U. Höfer
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 63)

Abstract

The electron dynamics of the image-potential states of clean and Xe-covered Ru(0001) surfaces was investigated by means of time-resolved two-photon photoemission. Xe adsorption is observed to reduce the coupling of the first image-potential state to the metal and leads to lifetimes that increase from 11 fs in case of the clean surface to 125 fs for a bilayer of Xe. The results are discussed within the framework of a tunneling model wherein the Xe 6s-derived electron affinity level determines the barrier height.

Keywords

Barrier Height Temperature Program Desorption Lifetime Effect Temperature Program Desorption Spectrum Xenon Adsorption 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • W. Berthold
    • 1
  • I. L. Shumay
    • 1
    • 2
  • P. Feulner
    • 3
  • U. Höfer
    • 1
    • 3
  1. 1.Max-Planck-Institut für QuantenoptikGarchingGermany
  2. 2.Lehrstuhl für FestkörperphysikUniversität Erlangen-NürnbergErlangenGermany
  3. 3.Physik DepartmentTechnische Universität MünchenJames-Franck-Str.GarchingGermany

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