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Magnetic-nonmagnetic transitions in intermediate-valence systems

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Zeitschrift für Physik B Condensed Matter

Abstract

We investigate the coexistence of ferromagnetism and intermediate valence in 4f-systems, which have ferromagnetic ground states in the normal valence phase and fluctuate between a magnetic (J≠0) and a nonmagnetic (J=0) configuration in the intermediate valence phase. We use the well-knowns-f model, which is extended by a hybridization term and an intraatomicf-Coulomb-interaction, for systems with ferromagnetics-f exchange. The alloy analogy of this model is solved within a CPA-scheme. We inspect the stability of the localf-momentm f , the valencen f and relevant quasiparticle densities of states in terms of the Bloch bandwidthW (closely related to external pressure!), thef-level positionE f (alloying!), and the hybridization matrix elementV.

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Authors and Affiliations

  1. Institut für Theoretische Physik II, Universität Münster, Domagkstrasse 75, D-4400, Münster, Germany

    V. Eyert & W. Nolting

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  1. V. Eyert
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  2. W. Nolting
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Eyert, V., Nolting, W. Magnetic-nonmagnetic transitions in intermediate-valence systems. Z. Physik B - Condensed Matter 64, 341–351 (1986). https://doi.org/10.1007/BF01303604

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