A short-range ±{}J Heisenberg spin glass with and without anisotropy on a simple cubic lattice is studied by using a hybrid Monte Carlo spin-dynamics method. The anisotropy leads to a cusplike peak of the susceptibility {χ} and a very slow relaxation of the spin configuration at low temperatures. From a finite-size-scaling analysis of the spin-glass susceptibility χsg, we find, for the first time, that the anisotropy induces a phase transition.
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Matsubara et al. (1991) studied this question.
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