Surface collective oscillations of metal clusters and spheres: Random-phase-approximation sum-rules approach
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...
| Authors: | , , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 1989 |
| Country: | España |
| Institution: | Universidad de Barcelona |
| Repository: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/9832 |
| Online Access: | https://hdl.handle.net/2445/9832 |
| Access Level: | Open access |
| Keyword: | Estructura atòmica Processos estocàstics Estructura molecular Atomic structure Molecular structure Stochastic processes |
| Summary: | 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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