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Theory of magnetic impurities in superconductors

V. Ground State Properties

  • Published:
Zeitschrift für Physik B Condensed Matter

Abstract

Ground state properties of a Kondo superconductor of low impurity concentration are calculated exactly within the Nagaoka approximation. The results for the location of the bound state motivate us to formulate the notion of intrinsic gaplessness. The order parameter, the ground state energy, and the thermodynamic critical field are computed. The relation to experiments and to the Hartree-Fock theory of magnetic impurities in a superconductor is discussed.

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Author notes

  1. H. Shiba

    Present address: Institut for Solid State Physics, The University of Tokyo, Japan

Authors and Affiliations

  1. Institut für Theoretische Physik, Universität Köln, Zülpicher Straße 77, D-5000, Köln 41, Germany

    E. Müller-Hartmann & H. Shiba

Authors
  1. E. Müller-Hartmann
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  2. H. Shiba
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Additional information

Dedicated to Prof. G. van den Berg on the occasion of his retirement from a readership at the University of Leiden (March 1976).

Work performed within the research program of the Sonderforschungsbereich 125 Aachen-Jülich-Köln.

Supported by the Deutsche Forschungsgemeinschaft.

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Müller-Hartmann, E., Shiba, H. Theory of magnetic impurities in superconductors. Z Physik B 23, 143–147 (1976). https://doi.org/10.1007/BF01352708

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  • DOI: https://doi.org/10.1007/BF01352708

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