The interaction of rare gas atoms with metal surfaces: a scattering theory approach

A. Chizmeshya, E. Zaremba

Research output: Contribution to journalArticle

52 Scopus citations

Abstract

The scattering theory formulation of the helium-metal surface interaction due to Zaremba and Kohn has been generalized to treat the entire rare gas sequence. The atom-surface repulsion is determined in terms of atomic HF T-matrix elements and is combined with a damped van der Waals interaction to produce total physisorption potentials. A systematic comparison is made between these potentials and those calculated in our earlier work based on the pseudopotential method originally developed by Harris and Liebsch. Although both formulations lead to similar trends in the calculated potentials, the latter treatment overestimates the repulsion between the adsorbate and the surface over the entire physisorption region and results in final potentials which are too shallow, particularly for the heavier rare gases. We find that our present results are in good agreement with existing experimental trends for the rare gases on various metals.

Original languageEnglish (US)
Pages (from-to)432-456
Number of pages25
JournalSurface Science
Volume268
Issue number1-3
DOIs
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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