Surface collective oscillations of metal clusters and spheres: Random-phase-approximation sum-rules approach
Open Access
- 15 April 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 39 (12) , 8247-8256
- https://doi.org/10.1103/physrevb.39.8247
Abstract
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.Keywords
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