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Microscopic description of the plasmon resonance in small deformed metal clusters

Authors: M. Bernath, M. E. Spina and J. M. Pacheco

Ref.: Physical Review B 49, 10764-10767 (1994)

Abstract: A full matrix random-phase-approximation calculation is performed to analyze surface plasmon excitations in spheroidal alkali-metal clusters, described in the jellium model. The single-particle levels are obtained in the local-density approximation to density-functional theory by solving the Kohn-Sham equations for deformed systems, making use of a one-center expansion method for the different potential terms. Numerical results are shown for the prolate Na10 and the oblate Na6 clusters.