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Resistive transition in $π$-junction superconductors

Enzo Granato
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Abstract

The resistivity behavior of inhomogeneous superconductors with random $π$ 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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Enzo Granato. 2003-11-04. Resistive transition in $π$-junction superconductors. https://doi.org/10.1103/physrevb.69.012503

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