Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice

Detalhes bibliográficos
Autor(a) principal: Iglesias, Jose Roberto
Data de Publicação: 1997
Outros Autores: Lacroix, Claudine, Coqblin, Bernard
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/104171
Resumo: The Kondo lattice model including nearest-neighbor magnetic exchange interactions is studied here in a mean-field approximation describing both the Kondo state and the intersite magnetic correlations. In the case of antiferromagnetic correlations, our model yields a decrease of the Kondo temperature compared to the one-impurity value, giving, therefore, a ‘‘revisited’’ version of the Doniach diagram with a rather flat Kondo temperature in the nonmagnetic case, as observed in several cerium compounds. Our model shows also that short-range magnetic correlations can appear at a temperature clearly larger than the Kondo temperature, as observed in compounds such as CeCu₆ or CeRu₂Si₂.
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spelling Iglesias, Jose RobertoLacroix, ClaudineCoqblin, Bernard2014-10-04T02:13:25Z19970163-1829http://hdl.handle.net/10183/104171000152530The Kondo lattice model including nearest-neighbor magnetic exchange interactions is studied here in a mean-field approximation describing both the Kondo state and the intersite magnetic correlations. In the case of antiferromagnetic correlations, our model yields a decrease of the Kondo temperature compared to the one-impurity value, giving, therefore, a ‘‘revisited’’ version of the Doniach diagram with a rather flat Kondo temperature in the nonmagnetic case, as observed in several cerium compounds. Our model shows also that short-range magnetic correlations can appear at a temperature clearly larger than the Kondo temperature, as observed in compounds such as CeCu₆ or CeRu₂Si₂.application/pdfengPhysical review. B, Condensed matter. New York. Vol. 56, no. 18 (Nov. 1997), p. 11820-11826Física da matéria condensadaEfeito kondoAntiferromagnetismoDensidade de estados eletronicosRevisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo latticeEstrangeiroinfo: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:UFRGSTEXT000152530.pdf.txt000152530.pdf.txtExtracted Texttext/plain32089http://www.lume.ufrgs.br/bitstream/10183/104171/2/000152530.pdf.txt87384ff0c908fdd075291a50755fa978MD52ORIGINAL000152530.pdf000152530.pdfTexto completo (inglês)application/pdf107734http://www.lume.ufrgs.br/bitstream/10183/104171/1/000152530.pdf909e49dd7e7df9916d58c9a85e3ad58aMD51THUMBNAIL000152530.pdf.jpg000152530.pdf.jpgGenerated Thumbnailimage/jpeg2035http://www.lume.ufrgs.br/bitstream/10183/104171/3/000152530.pdf.jpgda493fcf379fd9f7606d747dd44eb9e5MD5310183/1041712018-10-08 09:00:23.042oai:www.lume.ufrgs.br:10183/104171Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-08T12:00:23Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
title Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
spellingShingle Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
Iglesias, Jose Roberto
Física da matéria condensada
Efeito kondo
Antiferromagnetismo
Densidade de estados eletronicos
title_short Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
title_full Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
title_fullStr Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
title_full_unstemmed Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
title_sort Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
author Iglesias, Jose Roberto
author_facet Iglesias, Jose Roberto
Lacroix, Claudine
Coqblin, Bernard
author_role author
author2 Lacroix, Claudine
Coqblin, Bernard
author2_role author
author
dc.contributor.author.fl_str_mv Iglesias, Jose Roberto
Lacroix, Claudine
Coqblin, Bernard
dc.subject.por.fl_str_mv Física da matéria condensada
Efeito kondo
Antiferromagnetismo
Densidade de estados eletronicos
topic Física da matéria condensada
Efeito kondo
Antiferromagnetismo
Densidade de estados eletronicos
description The Kondo lattice model including nearest-neighbor magnetic exchange interactions is studied here in a mean-field approximation describing both the Kondo state and the intersite magnetic correlations. In the case of antiferromagnetic correlations, our model yields a decrease of the Kondo temperature compared to the one-impurity value, giving, therefore, a ‘‘revisited’’ version of the Doniach diagram with a rather flat Kondo temperature in the nonmagnetic case, as observed in several cerium compounds. Our model shows also that short-range magnetic correlations can appear at a temperature clearly larger than the Kondo temperature, as observed in compounds such as CeCu₆ or CeRu₂Si₂.
publishDate 1997
dc.date.issued.fl_str_mv 1997
dc.date.accessioned.fl_str_mv 2014-10-04T02:13:25Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/104171
dc.identifier.issn.pt_BR.fl_str_mv 0163-1829
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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. New York. Vol. 56, no. 18 (Nov. 1997), p. 11820-11826
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