Substrate mediation of the interaction between adatoms on graphite: Discrete lattice model

Hye Young Kim, Milton Walter Cole

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A study is presented of the substrate-mediated dispersion interaction ΔV between two adatoms on graphite. Correspondence is made between one contribution to the McLachlan expression (ΔVM) (appropriate to a continuum substrate) and a discrete lattice result ΔV(3) for the three-body, triple dipole, dispersion energy involving the adatoms and the C atoms. The numerical results for these two functions agree closely for distances relevant to adsorption if the adatom position L is referred to an effective image plane at z0 = 1 A ̊ above the outermost C plane. With this choice, the complete McLachlan energy leads to a ∼10% reduction in the well depth of the interatomic potential.

Original languageEnglish (US)
Pages (from-to)257-264
Number of pages8
JournalSurface Science
Volume194
Issue number1-2
DOIs
StatePublished - Jan 1 1988

All Science Journal Classification (ASJC) codes

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

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