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

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

doi:10.1063/1.452902

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 journal › Article › peer-review

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 C_n be the asymptotic dispersion coefficient [such that V(x) ∼ - C_nx^-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 language	English (US)
Pages (from-to)	3995-3999
Number of pages	5
Journal	The Journal of Chemical Physics
Volume	87
Issue number	7
DOIs	https://doi.org/10.1063/1.452902
State	Published - Jan 1 1987

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/1.452902

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title = "Systematic trends in van der Waals interactions: Atom-atom and atom-surface cases",

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.",

author = "G. Ihm and Cole, \{Milton Walter\} and Flavio Toigo and G. Scoles",

year = "1987",

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T1 - Systematic trends in van der Waals interactions

T2 - Atom-atom and atom-surface cases

AU - Ihm, G.

AU - Cole, Milton Walter

AU - Toigo, Flavio

AU - Scoles, G.

PY - 1987/1/1

Y1 - 1987/1/1

N2 - 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.

AB - 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.

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U2 - 10.1063/1.452902

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JO - The Journal of Chemical Physics

JF - The Journal of Chemical Physics

IS - 7

ER -

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

Abstract

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