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Theory of an induced-moment spin glass

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Zeitschrift für Physik B Condensed Matter

Abstract

We review the derivation of generalised TAP equations for general quantum spin systems and apply the theory to a simple induced-moment spin glass model. We consider two-level systems with a singlet ground state and a triplet excited state, which interact via long range random exchange couplings. For not too large energy splitting the spin glass state can be stabilised.

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Author notes

  1. H. J. Sommers

    Present address: Institut Laue Langevin, 156X, F-38042, Grenoble Cedex, France

Authors and Affiliations

  1. Theoretische Physik, Universität-GH-Duisburg, Lotharstrasse 65, D-4100, Duisburg 1, Germany

    H. J. Sommers & K. D. Usadel

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  1. H. J. Sommers
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  2. K. D. Usadel
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Sommers, H.J., Usadel, K.D. Theory of an induced-moment spin glass. Z. Physik B - Condensed Matter 47, 63–69 (1982). https://doi.org/10.1007/BF01686185

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  • DOI: https://doi.org/10.1007/BF01686185

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