Multipole surface-plasmon modes on simple metals

The average multipole surface-plasmon energy for simple metals, as well as that of ordinary surface and bulk plasmons, is obtained using energy-weighted moments of the electronic response to sufficiently general external perturbations. A local approximation of exchange and correlation effects is use...

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Authors: Sellarès González, Jordi, Barberán Falcón, Núria
Format: article
Status:Published version
Publication Date:1994
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/9904
Online Access:https://hdl.handle.net/2445/9904
Access Level:Open access
Keyword:Plasmons (Física)
Electrons
Plasmons (Physics)
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spelling Multipole surface-plasmon modes on simple metalsSellarès González, JordiBarberán Falcón, NúriaPlasmons (Física)ElectronsPlasmons (Physics)ElectronsThe average multipole surface-plasmon energy for simple metals, as well as that of ordinary surface and bulk plasmons, is obtained using energy-weighted moments of the electronic response to sufficiently general external perturbations. A local approximation of exchange and correlation effects is used within a jellium model. Band-structure effects are incorporated through an effective electronic mass. Taking advantage of the transparency of the method, we analyze under what circumstances such modes might be observable. It is shown that due to an interplay between Coulomb and kinetic energies, the multipole modes become unobservable for increasing values of the transferred momentum (q) parallel to the surface. The value of q at which the multipole mode becomes unobservable is much smaller than the cutoff value for Landau damping. The effect of the electronic surface diffuseness is also analyzed. We compare our results with previous density-functional calculations and with recent experimental data for Na, K, and Cs.The American Physical Society1994info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/9904Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.50.1879Physical Review B, 1994, vol. 50, núm. 3, p. 1879-1887.http://dx.doi.org/10.1103/PhysRevB.50.1879(c) The American Physical Society, 1994info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/99042026-05-27T06:46:51Z
dc.title.none.fl_str_mv Multipole surface-plasmon modes on simple metals
title Multipole surface-plasmon modes on simple metals
spellingShingle Multipole surface-plasmon modes on simple metals
Sellarès González, Jordi
Plasmons (Física)
Electrons
Plasmons (Physics)
Electrons
title_short Multipole surface-plasmon modes on simple metals
title_full Multipole surface-plasmon modes on simple metals
title_fullStr Multipole surface-plasmon modes on simple metals
title_full_unstemmed Multipole surface-plasmon modes on simple metals
title_sort Multipole surface-plasmon modes on simple metals
dc.creator.none.fl_str_mv Sellarès González, Jordi
Barberán Falcón, Núria
author Sellarès González, Jordi
author_facet Sellarès González, Jordi
Barberán Falcón, Núria
author_role author
author2 Barberán Falcón, Núria
author2_role author
dc.subject.none.fl_str_mv Plasmons (Física)
Electrons
Plasmons (Physics)
Electrons
topic Plasmons (Física)
Electrons
Plasmons (Physics)
Electrons
description The average multipole surface-plasmon energy for simple metals, as well as that of ordinary surface and bulk plasmons, is obtained using energy-weighted moments of the electronic response to sufficiently general external perturbations. A local approximation of exchange and correlation effects is used within a jellium model. Band-structure effects are incorporated through an effective electronic mass. Taking advantage of the transparency of the method, we analyze under what circumstances such modes might be observable. It is shown that due to an interplay between Coulomb and kinetic energies, the multipole modes become unobservable for increasing values of the transferred momentum (q) parallel to the surface. The value of q at which the multipole mode becomes unobservable is much smaller than the cutoff value for Landau damping. The effect of the electronic surface diffuseness is also analyzed. We compare our results with previous density-functional calculations and with recent experimental data for Na, K, and Cs.
publishDate 1994
dc.date.none.fl_str_mv 1994
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/9904
url https://hdl.handle.net/2445/9904
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.50.1879
Physical Review B, 1994, vol. 50, núm. 3, p. 1879-1887.
http://dx.doi.org/10.1103/PhysRevB.50.1879
dc.rights.none.fl_str_mv (c) The American Physical Society, 1994
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The American Physical Society, 1994
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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