Wave-vector dependence of spin and density multipole excitations in quantum dots

We have employed time-dependent local-spin density-functional theory to analyze the multipole spin and charge density excitations in GaAs-AlxGa1-xAs quantum dots. The on-plane transferred momentum degree of freedom has been taken into account, and the wave-vector dependence of the excitations is dis...

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Detalles Bibliográficos
Autores: Barranco Gómez, Manuel, Colletti, Leonardo, Lipparini, Enrico, Emperador, Agustí, Pi Pericay, Martí, Serra, Llorenç
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2000
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/10485
Acceso en línea:https://hdl.handle.net/2445/10485
Access Level:acceso abierto
Palabra clave:Teoria del funcional de densitat
Electrònica quàntica
Semiconductors
Fenòmens mesoscòpics (Física)
Transport d'electrons
Density functional theory
Quantum electronics
Mesoscopic phenomena (Physics)
Electron transport
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spelling Wave-vector dependence of spin and density multipole excitations in quantum dotsBarranco Gómez, ManuelColletti, LeonardoLipparini, EnricoEmperador, AgustíPi Pericay, MartíSerra, LlorençTeoria del funcional de densitatElectrònica quànticaSemiconductorsFenòmens mesoscòpics (Física)Transport d'electronsDensity functional theoryQuantum electronicsSemiconductorsMesoscopic phenomena (Physics)Electron transportWe have employed time-dependent local-spin density-functional theory to analyze the multipole spin and charge density excitations in GaAs-AlxGa1-xAs quantum dots. The on-plane transferred momentum degree of freedom has been taken into account, and the wave-vector dependence of the excitations is discussed. In agreement with previous experiments, we have found that the energies of these modes do not depend on the transferred wave vector, although their intensities do. Comparison with a recent resonant Raman scattering experiment [C. Schüller et al., Phys. Rev. Lett. 80, 2673 (1998)] is made. This allows us to identify the angular momentum of several of the observed modes as well as to reproduce their energiesThe American Physical Society200920092000info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion9 p.application/pdfhttps://hdl.handle.net/2445/10485Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.61.8289Physical Review B, 2000, vol. 61, núm. 12, p. 8289-8297http://dx.doi.org/10.1103/PhysRevB.61.8289(c) The American Physical Society, 2000info:eu-repo/semantics/openAccessoai:recercat.cat:2445/104852026-05-29T05:05:01Z
dc.title.none.fl_str_mv Wave-vector dependence of spin and density multipole excitations in quantum dots
title Wave-vector dependence of spin and density multipole excitations in quantum dots
spellingShingle Wave-vector dependence of spin and density multipole excitations in quantum dots
Barranco Gómez, Manuel
Teoria del funcional de densitat
Electrònica quàntica
Semiconductors
Fenòmens mesoscòpics (Física)
Transport d'electrons
Density functional theory
Quantum electronics
Semiconductors
Mesoscopic phenomena (Physics)
Electron transport
title_short Wave-vector dependence of spin and density multipole excitations in quantum dots
title_full Wave-vector dependence of spin and density multipole excitations in quantum dots
title_fullStr Wave-vector dependence of spin and density multipole excitations in quantum dots
title_full_unstemmed Wave-vector dependence of spin and density multipole excitations in quantum dots
title_sort Wave-vector dependence of spin and density multipole excitations in quantum dots
dc.creator.none.fl_str_mv Barranco Gómez, Manuel
Colletti, Leonardo
Lipparini, Enrico
Emperador, Agustí
Pi Pericay, Martí
Serra, Llorenç
author Barranco Gómez, Manuel
author_facet Barranco Gómez, Manuel
Colletti, Leonardo
Lipparini, Enrico
Emperador, Agustí
Pi Pericay, Martí
Serra, Llorenç
author_role author
author2 Colletti, Leonardo
Lipparini, Enrico
Emperador, Agustí
Pi Pericay, Martí
Serra, Llorenç
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Teoria del funcional de densitat
Electrònica quàntica
Semiconductors
Fenòmens mesoscòpics (Física)
Transport d'electrons
Density functional theory
Quantum electronics
Semiconductors
Mesoscopic phenomena (Physics)
Electron transport
topic Teoria del funcional de densitat
Electrònica quàntica
Semiconductors
Fenòmens mesoscòpics (Física)
Transport d'electrons
Density functional theory
Quantum electronics
Semiconductors
Mesoscopic phenomena (Physics)
Electron transport
description We have employed time-dependent local-spin density-functional theory to analyze the multipole spin and charge density excitations in GaAs-AlxGa1-xAs quantum dots. The on-plane transferred momentum degree of freedom has been taken into account, and the wave-vector dependence of the excitations is discussed. In agreement with previous experiments, we have found that the energies of these modes do not depend on the transferred wave vector, although their intensities do. Comparison with a recent resonant Raman scattering experiment [C. Schüller et al., Phys. Rev. Lett. 80, 2673 (1998)] is made. This allows us to identify the angular momentum of several of the observed modes as well as to reproduce their energies
publishDate 2000
dc.date.none.fl_str_mv 2000
2009
2009
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/2445/10485
url https://hdl.handle.net/2445/10485
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.61.8289
Physical Review B, 2000, vol. 61, núm. 12, p. 8289-8297
http://dx.doi.org/10.1103/PhysRevB.61.8289
dc.rights.none.fl_str_mv (c) The American Physical Society, 2000
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The American Physical Society, 2000
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 9 p.
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:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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