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Bethe-Ansatz solution of the ground-state of theSU (2j+1) Kondo (Coqblin-Schrieffer) model: Magnetization, magnetoresistance and universality

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Zeitschrift für Physik B Condensed Matter

Abstract

The magnetization, the magnetoresistance and the populations of the spin components of the Coqblin-Schrieffer model forj≦5/2 are calculated from the Kondo limit of a mixed-valence model discussed previously. The results forj=1/2 andj=1 agree with those given in the literature. Forj≧3/2 only an approximate solution of the integral equations is given, which interpolates between the exact low and high-field results. The universality is discussed and the exact Wilson-numbers are obtained. The Kondo limit of the mixed-valent model is shown to be equivalent to the Coqblin-Schrieffer model by using the Bethe-ansatz equations.

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Authors and Affiliations

  1. Institut für Festkörperforschung, Kernforschungsanlage Jülich, Postfach 1913, D-5170, Jülich 1, Germany

    P. Schlottmann (Heisenberg fellow of the Deutsche Forschungsgemeinschaft)

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  1. P. Schlottmann
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Schlottmann, P. Bethe-Ansatz solution of the ground-state of theSU (2j+1) Kondo (Coqblin-Schrieffer) model: Magnetization, magnetoresistance and universality. Z. Physik B - Condensed Matter 51, 223–235 (1983). https://doi.org/10.1007/BF01307678

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  • DOI: https://doi.org/10.1007/BF01307678

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