Interaction and band structure effects for He on graphite derived from scattering data

William E. Carlos, Milton Walter Cole

Research output: Contribution to journalLetter

22 Scopus citations

Abstract

Boato, Cantini and Tatarek have derived the surface bound state spectrum from measurements of 4He scattering by graphite. We fit their results to a potential V(r) obtained by pairwise summation of Lennard-Jones 6-12 interactions, with the optimal parameters ε{lunate} = 1.34 meV, σ = 2.75 Å. The maximum-to-minimum wall corrugation Δz = 0.21 Å characteristic of V(r) agrees with the value obtained from diffraction intensity measurements. Predictions are made for the band structure matrix elements for 4He and 3He, and for the selective adsorption eigen-values for 3He.

Original languageEnglish (US)
JournalSurface Science
Volume77
Issue number1
DOIs
StatePublished - Oct 1 1978

All Science Journal Classification (ASJC) codes

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

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