Critical States in Disordered Superconducting Films

Details Critical States in Disordered Superconducting Films Critical States in Disordered Superconducting Films

2004-06-04

arxiv.org/abs/cond-mat/0406122v1

J. Phys. A: Math. Gen. 37 (2004) L447-L452

Physics

Condensed Matter

Superconductivity

7 pages, 1 eps figure

Scientific paper

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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