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Critical States in Disordered Superconducting Films

A. Lamacraft·F. M. Marchetti·J. S. Meyer·R. S. Moir·B. D. Simons
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Abstract

When subject to a pair-breaking perturbation, the pairing susceptibility of a disordered superconductor exhibits substantial long-ranged mesoscopic fluctuations. Focusing on a thin film subject to a parallel magnetic field, it is proposed that the quantum phase transition to the bulk superconducting condensate may be preempted by the formation of a glass-like phase with multi-fractal correlations of a complex order parameter. Although not universal, we argue that such behavior may be a common feature of quantum critical phenomena in disordered environments.

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A. Lamacraft, F. M. Marchetti, J. S. Meyer, R. S. Moir, B. D. Simons. 2004-06-04. Critical States in Disordered Superconducting Films. https://doi.org/10.1088/0305-4470%2F37%2F36%2Fl01

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