Semiempirical determination of the atom-surface interaction

Carey Schwartz, Milton W. Cole, Josef Plíva

Research output: Contribution to journalArticle

44 Scopus citations

Abstract

We discuss three methods of determining V(z), the lateral average (G = 0 Fourier component) of the atom-surface interaction, from the bound state spectrum found in beam scattering. One method uses the Rydberg-Klein-Rees technique, which yields the width of the potential (i.e., separation of classical turning points) as a function of energy. This method incorporates also the known asymptotic form V ∼ -C3z-3, whereC3 is derived from the polarizability and dielectric function of atom and solid, respectively. The second method uses a hybrid potential, constructed from a Morse potential with shifted zero of energy connected to the asymptotic form,-C3z-3, requiring continuity of V and dV dz. The third potential is a Lennard-Jones 3-9 interaction. Results are presented for H and He scattering from LiF and NaF.

Original languageEnglish (US)
Pages (from-to)1-16
Number of pages16
JournalSurface Science
Volume75
Issue number1
DOIs
StatePublished - Jul 1 1978

All Science Journal Classification (ASJC) codes

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

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