Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots

9 pages (final publisher version), 10 pages, 8 figures (attached post-print version).-- PACS nrs.: 73.21.La, 73.21.-b.-- Pre-print version available at ArXiv: http://arxiv.org/abs/cond-mat/0308430.

Detalhes bibliográficos
Autores: Puente, Antonio, Serra, Llorenç, Nazmitdinov, Rashid G.
Formato: artículo
Fecha de publicación:2004
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/7469
Acesso em linha:http://hdl.handle.net/10261/7469
Access Level:acceso abierto
Palavra-chave:[PACS] Quantum dots
[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
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spelling Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dotsPuente, AntonioSerra, LlorençNazmitdinov, Rashid G.[PACS] Quantum dots[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems9 pages (final publisher version), 10 pages, 8 figures (attached post-print version).-- PACS nrs.: 73.21.La, 73.21.-b.-- Pre-print version available at ArXiv: http://arxiv.org/abs/cond-mat/0308430.We provide a quantitative determination of the crystallization onset for two electrons in a parabolic two-dimensional confinement. This system is shown to be well described by a roto-vibrational model, Wigner crystallization occurring when the rotational motion gets decoupled from the vibrational one. The Wigner molecule thus formed is characterized by its moment of inertia and by the corresponding sequence of rotational excited states. The role of a vertical magnetic field is also considered. Additional support to the analysis is given by the Hartree-Fock phase diagram for the ground state and by the random-phase approximation for the moment of inertia and vibron excitations.This work was supported by Grant No. BFM2002-03241 from DGI (Spain). R. G. N. gratefully acknowledges support from the Ramón y Cajal programme (Spain).Peer reviewedAmerican Physical Society200820082004info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_65012373 bytes3442675 bytestext/plainapplication/pdfhttp://hdl.handle.net/10261/7469reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevB.69.125315info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/74692026-05-22T06:33:51Z
dc.title.none.fl_str_mv Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots
title Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots
spellingShingle Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots
Puente, Antonio
[PACS] Quantum dots
[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
title_short Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots
title_full Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots
title_fullStr Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots
title_full_unstemmed Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots
title_sort Roto-vibrational spectrum and Wigner crystallization in two-electron parabolic quantum dots
dc.creator.none.fl_str_mv Puente, Antonio
Serra, Llorenç
Nazmitdinov, Rashid G.
author Puente, Antonio
author_facet Puente, Antonio
Serra, Llorenç
Nazmitdinov, Rashid G.
author_role author
author2 Serra, Llorenç
Nazmitdinov, Rashid G.
author2_role author
author
dc.subject.none.fl_str_mv [PACS] Quantum dots
[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
topic [PACS] Quantum dots
[PACS] Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
description 9 pages (final publisher version), 10 pages, 8 figures (attached post-print version).-- PACS nrs.: 73.21.La, 73.21.-b.-- Pre-print version available at ArXiv: http://arxiv.org/abs/cond-mat/0308430.
publishDate 2004
dc.date.none.fl_str_mv 2004
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/7469
url http://hdl.handle.net/10261/7469
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevB.69.125315
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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