The anisotropic frustrated three-dimensional (3D) $XY$ model with disorder in the coupling constants is simulated as a model of a point disordered superconductor in an applied magnetic field. A finite size scaling analysis of the helicity modulus gives strong evidence for a finite temperature transition with isotropic scaling and the correlation length exponent $\nu =1.5\pm 0.3$, consistent with 3D gauge glass universality.

• Received 31 January 2003

DOI:https://doi.org/10.1103/PhysRevLett.91.077002