Critical behavior and driven Monte Carlo dynamics of the XY spin glass in the phase representation

Details Critical behavior and driven Monte Carlo dynamics of the XY spin glass in the phase representation Critical behavior and driven Monte Carlo dynamics of the XY spin glass in the phase representation

2004-02-09

arxiv.org/abs/cond-mat/0402264v1

Phys. Rev. B 69, 144203 (2004)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 4 figures, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.69.144203

A driven Monte Carlo dynamics is introduced to study resistivity scaling in XY-type models in the phase representation. The method is used to study the phase transition of the three-dimensional XY spin glass with a Gaussian coupling distribution. We find a phase-coherence transition at finite temperature in good agreement with recent equilibrium Monte Carlo simulations which shows a single (spin and chiral) glass transition. Estimates of the static and dynamic critical exponents indicate that the critical behavior is in the same universality class as the the model with a bimodal coupling distribution. Relevance of these results for $\pi$-junction superconductors is also discussed.

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