Resistive transition in $π$-junction superconductors

Details Resistive transition in $π$-junction superconductors Resistive transition in $π$-junction superconductors

2003-11-04

arxiv.org/abs/cond-mat/0311083v1

Phys. Rev. B 69, 012503 (2004).

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.69.012503

The resistivity behavior of inhomogeneous superconductors with random $\pi$ junctions, as in high-$T_c$ materials with d-wave symmetry, is studied by numerical simulation of a three-dimensional XY spin glass model. Above a concentration threshold of antiferromagnetic couplings, a resistive transition is found in the chiral-glass phase at finite temperatures and the critical exponents are determined from dynamic scaling analysis. The power-law exponent for the nonlinear contribution found in recent resistivity measurements is determined by the dynamic critical exponent of this transition.

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