Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2006-09-15
Phys. Rev. B 75, 014412 (2007)
Physics
Condensed Matter
Disordered Systems and Neural Networks
10 pages, 10 figures, 2 tables
Scientific paper
10.1103/PhysRevB.75.014412
Monte Carlo data of the two-dimensional Ising spin glass with bimodal interactions are presented with the aim of understanding the low-temperature physics of the model. An analysis of the specific heat, spin-glass susceptibility, finite-size correlation length, and the Binder ratio is performed to try to verify a recent proposal in which for large system sizes and finite but low temperatures the effective critical exponents are identical to the critical exponents of the two-dimensional Ising spin glass with Gaussian interactions. Our results show that with present system sizes the recently proposed scenario in which the two-dimensional Ising spin glass with bimodally distributed interactions is in the same universality class as the model with Gaussian-distributed disorder at low but finite temperatures cannot be reliably proven.
Campbell Andrew I.
Katzgraber Helmut G.
Lee Lik Wee
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