Change in adsorption bond length with coverage for K Al(111)

  • Christensen S
  • Nielsen K
  • Nerlov J
 et al. 
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Abstract

The local bond geometry of K adsorbed on Al(111) at low temperature has been studied by photoelectron diffraction (PED) as a function of K coverage. It is found that K atoms occupy on-top sites in the coverage range 0.05-0.4 monolayer and that the KAl bond length increases by 0.17 Å over this coverage range. The reliability of this result is supported by PED studies of the (√3 × √3)R30° structures formed by adsorption of one-third monolayer Na and K at 300 K, and K at 150 K, which give results in quantitative agreement with previous structure determinations by SEXAFS and LEED. © 1995.

Author-supplied keywords

  • Alkali metals
  • Photoelectron diffraction
  • Surface relaxation and reconstruction

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Authors

  • S. V. Christensen

  • K. T. Nielsen

  • J. Nerlov

  • D. R. Batchelor

  • D. L. Adams

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