Simple estimations of the molecule-surface dispersion interaction: application to C60 fullerene


V.Karazin Kharkiv State University, 4 Svobody Sq., 61077 Kharkiv, Ukraine

Received December 24, 1998

Simple expressions have been proposed to estimate constants of dispersion interaction between a molecule and a surface (C3) and renormalization effects (C1s, C2s) of the London pair interaction C6. To make the calculations at a reasonable accuracy (about 5 %), only the static average polarizability, alpha0, and coefficient, alpha1, at omega2 in the power expansion of the dynamic polarizability alpha (omega ) with respect to frequency omega are to be known. The method has been applied to the C60 molecule and it has been found that it is just the diamond surface that provides the maximum interaction effect among materials chosen (Mg, Al, Ge, graphite, diamond, LiF, and NaF).

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