RECENT DEVELOPMENTS IN ISING SPIN GLASSES

A. P. Young and N. Kawashima
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A. P. Young: Physics Department, University of California, Santa Cruz, CA 95064, USA
N. Kawashima: Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan

International Journal of Modern Physics C (IJMPC), 1996, vol. 07, issue 03, 327-335

Abstract: We have studied the three-dimensional Ising spin glass with a± Jdistribution by Monte Carlo simulations. Using larger sizes and much better statistics than in earlier work, a finite size scaling analysis shows quite strong evidence for a finite transition temperature,Tc, with ordering belowTc. Our estimate of the transition temperature is rather lower than in earlier work, and the value of the correlation length exponent, ν, is somewhat higher. Because there may be (unknown) corrections to finite size scaling, we do not completely rule out the possibility thatTc= 0or thatTcis finite but with no order belowTc. However, from our data, these possibilities seem less likely.

Date: 1996
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DOI: 10.1142/S0129183196000260

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