Magnetic character of the two-dimensional electron gas

The energies of the paramagnetic and ferromagnetic states of the two-dimensional electron gas are evaluated and compared in order to determine the magnetic character of the ground state. The calculations are made with the self-consistent Hartree-Fock approximation and the deformable jellium model. S...

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Bibliographic Details
Authors: Orozco, S, Mendez-Moreno, R, Moreno, M
Format: article
Status:Published version
Publication Date:2001
Country:México
Institution:Universidad Nacional Autónoma de México
Repository:Sistema de Información de la Facultad de Ciencias, UNAM
OAI Identifier:oai:repositorio.fciencias.unam.mx:11154/1978
Online Access:http://hdl.handle.net/11154/1978
Access Level:Open access
Keyword:Physics, Condensed Matter
electron-electron interaction
electronic states (localized)
phase transitions
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spelling Magnetic character of the two-dimensional electron gasOrozco, SMendez-Moreno, RMoreno, MPhysics, Condensed Matterelectron-electron interactionelectronic states (localized)phase transitionsThe energies of the paramagnetic and ferromagnetic states of the two-dimensional electron gas are evaluated and compared in order to determine the magnetic character of the ground state. The calculations are made with the self-consistent Hartree-Fock approximation and the deformable jellium model. Several transition points between different magnetic phases are obtained. At very high densities of r(s) approximate to 2 a first transition is obtained from a paramagnetic fluid to a ferromagnetic one. At r(st1) approximate to 4.8 a symmetry and magnetic transition is obtained from a ferromagnetic fluid to a paramagnetic localized state with a periodic density centered on a hexagonal lattice. A ferromagnetic localized state is predicted at lower densities. The results are compared with those reported for the system with square symmetry. (C) 2001 Elsevier Science Ltd. All rights reserved.2011-01-22T10:26:58Z2011-01-22T10:26:58Z2001info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0038-1098http://hdl.handle.net/11154/19782335119(2):111-115reponame:Sistema de Información de la Facultad de Ciencias, UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenSolid State Communicationsinfo:eu-repo/semantics/openAccessoai:repositorio.fciencias.unam.mx:11154/19782025-09-17T19:20:39Z
dc.title.none.fl_str_mv Magnetic character of the two-dimensional electron gas
title Magnetic character of the two-dimensional electron gas
spellingShingle Magnetic character of the two-dimensional electron gas
Orozco, S
Physics, Condensed Matter
electron-electron interaction
electronic states (localized)
phase transitions
title_short Magnetic character of the two-dimensional electron gas
title_full Magnetic character of the two-dimensional electron gas
title_fullStr Magnetic character of the two-dimensional electron gas
title_full_unstemmed Magnetic character of the two-dimensional electron gas
title_sort Magnetic character of the two-dimensional electron gas
dc.creator.none.fl_str_mv Orozco, S
Mendez-Moreno, R
Moreno, M
author Orozco, S
author_facet Orozco, S
Mendez-Moreno, R
Moreno, M
author_role author
author2 Mendez-Moreno, R
Moreno, M
author2_role author
author
dc.subject.none.fl_str_mv Physics, Condensed Matter
electron-electron interaction
electronic states (localized)
phase transitions
topic Physics, Condensed Matter
electron-electron interaction
electronic states (localized)
phase transitions
description The energies of the paramagnetic and ferromagnetic states of the two-dimensional electron gas are evaluated and compared in order to determine the magnetic character of the ground state. The calculations are made with the self-consistent Hartree-Fock approximation and the deformable jellium model. Several transition points between different magnetic phases are obtained. At very high densities of r(s) approximate to 2 a first transition is obtained from a paramagnetic fluid to a ferromagnetic one. At r(st1) approximate to 4.8 a symmetry and magnetic transition is obtained from a ferromagnetic fluid to a paramagnetic localized state with a periodic density centered on a hexagonal lattice. A ferromagnetic localized state is predicted at lower densities. The results are compared with those reported for the system with square symmetry. (C) 2001 Elsevier Science Ltd. All rights reserved.
publishDate 2001
dc.date.none.fl_str_mv 2001
2011-01-22T10:26:58Z
2011-01-22T10:26:58Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0038-1098
http://hdl.handle.net/11154/1978
2335
identifier_str_mv 0038-1098
2335
url http://hdl.handle.net/11154/1978
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv Solid State Communications
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv 119(2):111-115
reponame:Sistema de Información de la Facultad de Ciencias, UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Sistema de Información de la Facultad de Ciencias, UNAM
collection Sistema de Información de la Facultad de Ciencias, UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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