Van der Waals induced polarization: the influence of the magnetic dipolar interaction

Usual studies of van der Waals interactions between two systems only take into account electrical interactions. However we show that, when calculating the induced dipole, two sorts of terms must appear: the first ones (characterized by the presence of a quadrupolar transition) are well known. The ot...

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Bibliographic Details
Published in:The Journal of chemical physics 1988-03, Vol.88 (5), p.3211-3215
Main Authors: VAN LABEKE, D, GROSSEL, P, VIGOUREUX, J. M
Format: Article
Language:English
Subjects:
Atomic and molecular collision processes and interactions
Atomic and molecular physics
Exact sciences and technology
Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions
Physics
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Summary:Usual studies of van der Waals interactions between two systems only take into account electrical interactions. However we show that, when calculating the induced dipole, two sorts of terms must appear: the first ones (characterized by the presence of a quadrupolar transition) are well known. The others (which characterize magnetic interactions) have never been considered. We study and compare these two kinds of terms. As in previous papers, we use quantum electrodynamics and retardation effects are taken into account. In the near zone limit, the magnetic terms varying as 1/R5 are generally negligible when compared to the quadrupolar terms which vary in 1/R7. In the Casimir zone, the new magnetic terms are of the same order as the quadrupolar ones, and show a 1/R8 dependence.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.453914