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Random Anisotropy Spin-Glass

  • Erling Pytte
Part of the NATO Advanced Study Institutes Series book series (NSSB, volume 50)

Abstract

In this seminar some recent work on a new type of spin-glass will be discussed.1–4 The model consists of a conventional Heisenberg model together with a random uniaxial anisotropy term,
$$\mathcal{H} = - \sum {{J}_{{ij}}}{\mkern 1mu} {{S}_{i}}{\mkern 1mu} \bullet {{S}_{j}} - D\sum {{({{\hat{n}}_{i}}{\mkern 1mu} \bullet {{S}_{i}})}^{2}}$$
(1)
Here n i is a unit vector denoting the orientation of the uniaxial anisotropy axis on the i th site. The orientation of the axes is assumed to be random with no correlation between the axes on different sites. In general, a model with m spin components in d dimensions will be considered.

Keywords

Spin Glass Heisenberg Model Uniaxial Anisotropy Stable Fixed Point Random Field Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Erling Pytte
    • 1
  1. 1.IBM ResearchYorktown HeightsUSA

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