Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/9763
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Serra, Llorenç | cat |
dc.contributor.author | Garcias, Francisca | cat |
dc.contributor.author | Barranco Gómez, Manuel | cat |
dc.contributor.author | Barberán Falcón, Núria | cat |
dc.contributor.author | Navarro Faus, Jesús | cat |
dc.date.accessioned | 2009-10-22T10:15:19Z | - |
dc.date.available | 2009-10-22T10:15:19Z | - |
dc.date.issued | 1990 | cat |
dc.identifier.issn | 0163-1829 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/9763 | - |
dc.description.abstract | We have obtained the once and thrice energy-weighted moments of the random-phase-approximation (RPA) response to q-dependent excitation operators of type j L (qr) Y L 0 for metal spheres described within a spherical jellium model. These two moments, in conjunction with the Thomas-Fermi estimation of the RPA inverse energy-weighted moment, are used to study the response of these systems as a function of q. For small values of q, we recover the surface-mode systematics, whereas for large q’s the response is mainly determined by electron-hole excitations. For intermediate q values, bulk oscillations are found and their connection with the hydrodynamical-model predictions is established. In the limit of a big sphere, we have obtained an improved bulk-plasmon pole approximation for the dispersion relation which includes in a very easy way exchange and correlation effects. We have found that these corrections are not negligible. The moments of the response corresponding to a plane wave e i q ⋅ r are also discussed. Numerical applications to the case of Na spheres whose ground-state structure is described by models of different complexity (constant electronic density, Thomas-Fermi or Kohn-Sham) are presented. | - |
dc.format.extent | 13 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | cat |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http.//dx.doi.org/10.1103/PhysRevB.41.3434 | cat |
dc.relation.ispartof | Physical Review B, 1990, vol. 41, núm. 6, p. 3434-3446. | cat |
dc.relation.uri | https://doi.org/10.1103/PhysRevB.41.3434 | - |
dc.rights | (c) The American Physical Society, 1990 | cat |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de l'estat sòlid | cat |
dc.subject.classification | Electrònica quàntica | cat |
dc.subject.other | Solid state physics | eng |
dc.subject.other | Quantum electronics | eng |
dc.title | Multipole response of metal spheres to q-dependent excitation operators | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 43611 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.