Effective critical behavior of the two-dimensional Ising spin glass with bimodal interactions Academic Article uri icon

abstract

  • 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. © 2007 The American Physical Society.

author list (cited authors)

  • Katzgraber, H. G., Lee, L. W., & Campbell, I. A.

citation count

  • 27

publication date

  • January 2007