Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice
dc.contributor.author | Iglesias, Jose Roberto | pt_BR |
dc.contributor.author | Lacroix, Claudine | pt_BR |
dc.contributor.author | Coqblin, Bernard | pt_BR |
dc.date.accessioned | 2014-10-04T02:13:25Z | pt_BR |
dc.date.issued | 1997 | pt_BR |
dc.identifier.issn | 0163-1829 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/104171 | pt_BR |
dc.description.abstract | 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. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review. B, Condensed matter. New York. Vol. 56, no. 18 (Nov. 1997), p. 11820-11826 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Física da matéria condensada | pt_BR |
dc.subject | Efeito kondo | pt_BR |
dc.subject | Antiferromagnetismo | pt_BR |
dc.subject | Densidade de estados eletronicos | pt_BR |
dc.title | Revisited doniach diagram : influence of short-range antiferromagnetic correlations in the Kondo lattice | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000152530 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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