Phase diagram for the Anderson lattice model

Detalhes bibliográficos
Autor(a) principal: Bernhard, Ben Hur
Data de Publicação: 2000
Outros Autores: Lacroix, Claudine, Iglesias, Jose Roberto, Coqblin, Bernard
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/104267
Resumo: We study the competition between the Kondo effect and the Ruderman-Kittel-Kasuya-Yosida interaction in the framework of the Anderson lattice model with an extra intersite exchange term. By using an approximation based on an atomic expansion, we obtain, for the symmetric half-filled case, a phase diagram analog to the Doniach diagram for the Kondo lattice. The qualitative and quantitative progress in the description of experimental results for the cerium Kondo compounds with respect to previous approaches is discussed. We also calculate the specific heat which exhibits a two-peak structure as a function of temperature.
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spelling Bernhard, Ben HurLacroix, ClaudineIglesias, Jose RobertoCoqblin, Bernard2014-10-08T02:11:25Z20001098-0121http://hdl.handle.net/10183/104267000274742We study the competition between the Kondo effect and the Ruderman-Kittel-Kasuya-Yosida interaction in the framework of the Anderson lattice model with an extra intersite exchange term. By using an approximation based on an atomic expansion, we obtain, for the symmetric half-filled case, a phase diagram analog to the Doniach diagram for the Kondo lattice. The qualitative and quantitative progress in the description of experimental results for the cerium Kondo compounds with respect to previous approaches is discussed. We also calculate the specific heat which exhibits a two-peak structure as a function of temperature.application/pdfengPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 61, no. 1 (Jan. 2000), p. 441-446FísicaDiagramas de faseModelo de AndersonEfeito kondoInteracao rkkyCompostos de CérioCalor especificoPhase diagram for the Anderson lattice 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:UFRGSORIGINAL000274742.pdf000274742.pdfTexto completo (inglês)application/pdf335302http://www.lume.ufrgs.br/bitstream/10183/104267/1/000274742.pdf8e429b931951386d87eea21278cf3cf3MD51TEXT000274742.pdf.txt000274742.pdf.txtExtracted Texttext/plain19898http://www.lume.ufrgs.br/bitstream/10183/104267/2/000274742.pdf.txt71487303604bf3741b32e0be6ca1f114MD52THUMBNAIL000274742.pdf.jpg000274742.pdf.jpgGenerated Thumbnailimage/jpeg1933http://www.lume.ufrgs.br/bitstream/10183/104267/3/000274742.pdf.jpg2bc271ae1e912e7cd8d89ddaaa057296MD5310183/1042672018-10-09 08:10:51.315oai:www.lume.ufrgs.br:10183/104267Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-09T11:10:51Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Phase diagram for the Anderson lattice model
title Phase diagram for the Anderson lattice model
spellingShingle Phase diagram for the Anderson lattice model
Bernhard, Ben Hur
Física
Diagramas de fase
Modelo de Anderson
Efeito kondo
Interacao rkky
Compostos de Cério
Calor especifico
title_short Phase diagram for the Anderson lattice model
title_full Phase diagram for the Anderson lattice model
title_fullStr Phase diagram for the Anderson lattice model
title_full_unstemmed Phase diagram for the Anderson lattice model
title_sort Phase diagram for the Anderson lattice model
author Bernhard, Ben Hur
author_facet Bernhard, Ben Hur
Lacroix, Claudine
Iglesias, Jose Roberto
Coqblin, Bernard
author_role author
author2 Lacroix, Claudine
Iglesias, Jose Roberto
Coqblin, Bernard
author2_role author
author
author
dc.contributor.author.fl_str_mv Bernhard, Ben Hur
Lacroix, Claudine
Iglesias, Jose Roberto
Coqblin, Bernard
dc.subject.por.fl_str_mv Física
Diagramas de fase
Modelo de Anderson
Efeito kondo
Interacao rkky
Compostos de Cério
Calor especifico
topic Física
Diagramas de fase
Modelo de Anderson
Efeito kondo
Interacao rkky
Compostos de Cério
Calor especifico
description We study the competition between the Kondo effect and the Ruderman-Kittel-Kasuya-Yosida interaction in the framework of the Anderson lattice model with an extra intersite exchange term. By using an approximation based on an atomic expansion, we obtain, for the symmetric half-filled case, a phase diagram analog to the Doniach diagram for the Kondo lattice. The qualitative and quantitative progress in the description of experimental results for the cerium Kondo compounds with respect to previous approaches is discussed. We also calculate the specific heat which exhibits a two-peak structure as a function of temperature.
publishDate 2000
dc.date.issued.fl_str_mv 2000
dc.date.accessioned.fl_str_mv 2014-10-08T02:11:25Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/104267
dc.identifier.issn.pt_BR.fl_str_mv 1098-0121
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 61, no. 1 (Jan. 2000), p. 441-446
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