The Kondo Lattice Model in Infinite Dimensions II. Static Susceptibilities and Phase Diagram

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dc.creatorOtsuki, Junya
dc.creatorKusunose, Hiroaki
dc.creatorKuramoto, Yoshio
dc.date2008-11-07
dc.date2008-12-27
dc.date.accessioned2026-07-07T12:53:02Z
dc.date.available2026-07-07T12:53:02Z
dc.descriptionMagnetic and charge susceptibilities in the Kondo lattice are derived by the continuous-time quantum Monte Carlo (CT-QMC) method combined with the dynamical mean-field theory. For a weak exchange coupling J and near half filling of the conduction band, antiferromagnetic transition occurs as signalled by divergence of the staggered magnetic susceptibility with lowering temperature. With increasing J, the Kondo effect suppresses the divergence, and the critical value of J agrees well with Doniach's estimate which considers the RKKY interaction as competing with the Kondo effect. For low density of conduction electrons, a ferromagnetic ordering is observed where Doniach's estimate does not work. Around quarter filling, a charge-density-wave (CDW) transition is found. The CDW is interpreted from the strong-coupling limit in terms of effective repulsion between Kondo singlets.
dc.description10 pages, 16 figures
dc.identifierhttps://arxiv.org/abs/0811.1102
dc.identifierhttp://arxiv.org/abs/0811.1102
dc.identifierJ. Phys. Soc. Jpn. 78 (2009) 034719
dc.identifierdoi:10.1143/JPSJ.78.034719
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223488
dc.subjectStrongly Correlated Electrons
dc.titleThe Kondo Lattice Model in Infinite Dimensions II. Static Susceptibilities and Phase Diagram
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