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The three-dimensional Ising spin-glass in zero field with nearest-neighbor interactions having distribution is studied by Monte Carlo simulations for samples of linear dimension L with 320. Results for the probability distribution, P₋ (q), of the spin-glass order parameter are analyzed by finite-size scaling. Data for T1. 2 are consistent with a conventional phase transition at T₂=1. 2-₀. ₂^+0. 1, with exponents =1. 30. 3 and =-0. 30. 2. However, results at lower temperature indicate marginal behavior and suggest that the lower critical dimensional is close to three.
Bhatt et al. (Mon,) studied this question.
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