The 3D +-J Ising model at the ferromagnetic transition line

Details The 3D +-J Ising model at the ferromagnetic transition line The 3D +-J Ising model at the ferromagnetic transition line

2007-04-03

arxiv.org/abs/0704.0427v1

Phys. Rev. B 76 (2007) 094402

Physics

Condensed Matter

Disordered Systems and Neural Networks

23 pages, 12 figs

Scientific paper

10.1103/PhysRevB.76.094402

We study the critical behavior of the three-dimensional $\pm J$ Ising model [with a random-exchange probability $P(J_{xy}) = p \delta(J_{xy} - J) + (1-p) \delta(J_{xy} + J)$] at the transition line between the paramagnetic and ferromagnetic phase, which extends from $p=1$ to a multicritical (Nishimori) point at $p=p_N\approx 0.767$. By a finite-size scaling analysis of Monte Carlo simulations at various values of $p$ in the region $p_N

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