Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model

Detalhes bibliográficos
Autor(a) principal: Carvalho, Rubens Diego Barbosa de
Data de Publicação: 2014
Outros Autores: Gusmao, Miguel Angelo Cavalheiro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/107121
Resumo: We investigate the stability of “magnetic” ordering against band-filling changes and Anderson-like disorder in the Falicov-Kimball model, within dynamical mean-field theory (DMFT). The one-particle density of states is obtained by both arithmetic and geometric averages over disorder, allowing us to detect the localization transition. Varying the Coulomb interaction and disorder strength, we construct phase diagrams where we identify metallic and insulating regions, with or without magnetic ordering, and determine how these phases are affected by band filling.
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spelling Carvalho, Rubens Diego Barbosa deGusmao, Miguel Angelo Cavalheiro2014-11-19T02:15:52Z20141098-0121http://hdl.handle.net/10183/107121000938437We investigate the stability of “magnetic” ordering against band-filling changes and Anderson-like disorder in the Falicov-Kimball model, within dynamical mean-field theory (DMFT). The one-particle density of states is obtained by both arithmetic and geometric averages over disorder, allowing us to detect the localization transition. Varying the Coulomb interaction and disorder strength, we construct phase diagrams where we identify metallic and insulating regions, with or without magnetic ordering, and determine how these phases are affected by band filling.application/pdfengPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 90, no. 8 (Aug. 2014), 085108, 7 p.Modelo de AndersonDensidade de estados eletronicosTransições magnéticasSistemas eletronicos fortemente correlacionadosTransição metal isolanteBand-filling and disorder effects in the ordered phase of the Falicov-Kimball modelEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000938437.pdf000938437.pdfTexto completo (inglês)application/pdf2299881http://www.lume.ufrgs.br/bitstream/10183/107121/1/000938437.pdfbd4b40619c042830aee7567930ae8405MD51TEXT000938437.pdf.txt000938437.pdf.txtExtracted Texttext/plain29245http://www.lume.ufrgs.br/bitstream/10183/107121/2/000938437.pdf.txt134a55c89b417856fbcce50f90117ea7MD52THUMBNAIL000938437.pdf.jpg000938437.pdf.jpgGenerated Thumbnailimage/jpeg2210http://www.lume.ufrgs.br/bitstream/10183/107121/3/000938437.pdf.jpg8bf34e38a59e624abf871f8bd45d750fMD5310183/1071212022-02-22 05:13:52.294024oai:www.lume.ufrgs.br:10183/107121Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-02-22T08:13:52Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
title Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
spellingShingle Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
Carvalho, Rubens Diego Barbosa de
Modelo de Anderson
Densidade de estados eletronicos
Transições magnéticas
Sistemas eletronicos fortemente correlacionados
Transição metal isolante
title_short Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
title_full Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
title_fullStr Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
title_full_unstemmed Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
title_sort Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
author Carvalho, Rubens Diego Barbosa de
author_facet Carvalho, Rubens Diego Barbosa de
Gusmao, Miguel Angelo Cavalheiro
author_role author
author2 Gusmao, Miguel Angelo Cavalheiro
author2_role author
dc.contributor.author.fl_str_mv Carvalho, Rubens Diego Barbosa de
Gusmao, Miguel Angelo Cavalheiro
dc.subject.por.fl_str_mv Modelo de Anderson
Densidade de estados eletronicos
Transições magnéticas
Sistemas eletronicos fortemente correlacionados
Transição metal isolante
topic Modelo de Anderson
Densidade de estados eletronicos
Transições magnéticas
Sistemas eletronicos fortemente correlacionados
Transição metal isolante
description We investigate the stability of “magnetic” ordering against band-filling changes and Anderson-like disorder in the Falicov-Kimball model, within dynamical mean-field theory (DMFT). The one-particle density of states is obtained by both arithmetic and geometric averages over disorder, allowing us to detect the localization transition. Varying the Coulomb interaction and disorder strength, we construct phase diagrams where we identify metallic and insulating regions, with or without magnetic ordering, and determine how these phases are affected by band filling.
publishDate 2014
dc.date.accessioned.fl_str_mv 2014-11-19T02:15:52Z
dc.date.issued.fl_str_mv 2014
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/107121
dc.identifier.issn.pt_BR.fl_str_mv 1098-0121
dc.identifier.nrb.pt_BR.fl_str_mv 000938437
identifier_str_mv 1098-0121
000938437
url http://hdl.handle.net/10183/107121
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 90, no. 8 (Aug. 2014), 085108, 7 p.
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