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Surface collective oscillations of metal clusters and spheres: Random-phase-approximation sum-rules approach

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Using the once and thrice energy-weighted moments of the random-phase-approximation strength function, we have derived compact expressions for the average energy of surface collective oscillations of clusters and spheres of metal atoms. The L=0 volume mode has also been studied. We have carried out quantal and semiclassical calculations for Na and Ag systems in the spherical-jellium approximation. We present a rather thorough discussion of surface diffuseness and quantal size effects on the resonance energies.

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.39.8247

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Surface collective oscillations of metal clusters and spheres: Random-phase-approximation sum-rules approach