Phys. Rev. Lett. 54, 924–927 (1985)Search for a transition in the three-dimensional J Ising spin-glassReceived 20 August 1984; published in the issue dated 4 March 1985 The three-dimensional Ising spin-glass in zero field with nearest-neighbor interactions having ±J distribution is studied by Monte Carlo simulations for samples of linear dimension L with 3≤L≤20. Results for the probability distribution, PL(q), of the spin-glass order parameter are analyzed by finite-size scaling. Data for T≥1.2 are consistent with a conventional phase transition at Tc=1.2-0.2+0.1, with exponents ν=1.3±0.3 and η=-0.3±0.2. However, results at lower temperature indicate marginal behavior and suggest that the lower critical dimensional is close to three. © 1985 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.54.924
DOI:
10.1103/PhysRevLett.54.924
PACS:
64.60.Cn, 05.50.+q, 75.10.Hk, 75.50.Kj
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