Systematic trends in van der Waals interactions: Atom-atom and atom-surface cases

G. Ihm, Milton Walter Cole, Flavio Toigo, G. Scoles

Research output: Contribution to journalArticle

52 Scopus citations

Abstract

Correlations are discussed for van der Waals interactions [V(x)] of two types: between two atoms and between an atom and a surface. Letting ε be the well depth and Cn be the asymptotic dispersion coefficient [such that V(x) ∼ - Cnx-n], it is shown that (C n/ε)1/n is proportional to the equilibrium distance and to the decay length of the repulsive part of the interaction. A simple model which describes and unifies these correlations is presented.

Original languageEnglish (US)
Pages (from-to)3995-3999
Number of pages5
JournalThe Journal of Chemical Physics
Volume87
Issue number7
DOIs
StatePublished - Jan 1 1987

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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