Static electric polarizabilities of sodium clusters

I. Moullet, José Luís Martins, F. Reuse, and Jean Buttet
Phys. Rev. B 42, 11598 – Published 15 December 1990
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Abstract

We present pseudopotential local-spin-density calculations of the static electric polarizabilities of sodium clusters up to nine atoms. We show that the comparison of the calculated polarizabilities with the experimental average polarizabilities and with the observed collective resonance frequencies gives information on which isomer is most probably observed in the experiments. Our results indicate that the plateau in the observed polarizability between Na6 and Na7 could be related to the change from two-dimensional to three-dimensional geometries. We also present calculations for the permanent dipole moment of the clusters, and evaluate the effects of the ionic vibrations on the molecular polarizability of Na2 and Na3.

  • Received 10 September 1990

DOI:https://doi.org/10.1103/PhysRevB.42.11598

©1990 American Physical Society

Authors & Affiliations

I. Moullet

  • Institut de Physique Expérimentale, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

José Luís Martins

  • Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455

F. Reuse and Jean Buttet

  • Institut de Physique Expérimentale, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

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Vol. 42, Iss. 18 — 15 December 1990

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