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Reentrant behaviour in spin glasses

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Zeitschrift für Physik B Condensed Matter

Abstract

We present the phase diagram of thed-dimensional random bond Ising model as a representative system for spin glasses. We consider nearest neighbour ferromagnetic couplingsJ with concentration 1-p and impurity couplingsaJ (|a|≦1) with concentrationp. It is shown that for antiferromagnetic couplings, −1<a<0, the system quite generally exhibits reentrant behaviour, i.e. two phase transitions at finite temperatures, in certain ranges of the concentrationp. It is further argued that this behaviour is a quite common feature for spin glass systems characterized by competing interactions.

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Author notes

  1. W. F. Wolff

    Present address: Department of Applied Physics, Stanford University, 94305, Stanford, CA, USA

Authors and Affiliations

  1. Institut für Theoretische Physik, Universität zu Köln, Zülpicher Strasse 77, D-5000, Köln 41, Federal Republic of Germany

    W. F. Wolff & J. Zittartz

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  1. W. F. Wolff
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  2. J. Zittartz
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Dedicated to B. Mühlschlegel on the occasion of his 60th birthday

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Wolff, W.F., Zittartz, J. Reentrant behaviour in spin glasses. Z. Physik B - Condensed Matter 60, 185–188 (1985). https://doi.org/10.1007/BF01304437

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  • DOI: https://doi.org/10.1007/BF01304437

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