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Intermediate valence: Phase diagram and Kondo behaviour in a simple model

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Zeitschrift für Physik B Condensed Matter

Abstract

We have studied an infinitely narrow band version of the Anderson Hamiltonian. Including a Coulomb repulsion between localized and band states in the mean field approximation, we have been able to describe metal-insulator phase transitions and different properties characteristic of intermediate valence in both phases. These include: non-integer occupation, specific heat, saturating static magnetic succeptibility and dynamical properties such as Mössbauer spectra and spin flip neutron spectra. We discuss for what range of values of the parameters some results can be reproduced by a narrow band version of the Kondo Hamiltonian.

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Authors and Affiliations

  1. Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, 8400, S.C. de Bariloche, R.N., Argentina

    B. Alascio

  2. Instituto Balseiro, Universidad Nacional de Cuyo, Comisión Nacional de Energía Atómica, 8400, S.C. de Bariloche, R.N., Argentina

    H. Wio & A. López

Authors
  1. B. Alascio
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  2. H. Wio
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  3. A. López
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Alascio, B., Wio, H. & López, A. Intermediate valence: Phase diagram and Kondo behaviour in a simple model. Z Physik B 36, 37–46 (1979). https://doi.org/10.1007/BF01333952

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  • DOI: https://doi.org/10.1007/BF01333952

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