A theory is presented for the second term of the series representing the asymptotic atom-surface interaction: V(z) ∼ - C 3(z - z0)-3 - C5(z - z0)-5... The expression for C 5 is analogous to that for C3, with the quadrupole polarizability y replacing the dipole polarizability α. Numerical results are obtained for H, Na, Cs and noble gas atoms interacting with the surfaces of noble metals, Al, LiF, graphite and MgO. In general, C 5 C3 is of order γ0 α 0, i.e., the ratio of static adatom polarizabilities. Examples are presented to show that the calculated term involving C5 should be included in the vicinity of the potential minimum
THE DISPERSION FORCE OF PHYSICAL ADSORPTION .1. LOCAL THEORY
TOIGO, FLAVIO;
1984
Abstract
A theory is presented for the second term of the series representing the asymptotic atom-surface interaction: V(z) ∼ - C 3(z - z0)-3 - C5(z - z0)-5... The expression for C 5 is analogous to that for C3, with the quadrupole polarizability y replacing the dipole polarizability α. Numerical results are obtained for H, Na, Cs and noble gas atoms interacting with the surfaces of noble metals, Al, LiF, graphite and MgO. In general, C 5 C3 is of order γ0 α 0, i.e., the ratio of static adatom polarizabilities. Examples are presented to show that the calculated term involving C5 should be included in the vicinity of the potential minimumFile in questo prodotto:
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