Field Theory of Mesoscopic Fluctuations in Superconductor/Normal-Metal Systems

Abstract

Thermodynamic and transport properties of normal disordered conductors are strongly influenced by the proximity of a superconductor. A cooperation between mesoscopic coherence and Andreev scattering of particles from the superconductor generates new types of interference phenomena. We introduce a field theoretic approach capable of exploring both averaged properties and mesoscopic fluctuations of superconductor/normal-metal systems. As an example the method is applied to the study of the level statistics of a SNS-junction.

4 pages, REVTEX, two eps-figures included; submitted to JETP letters

Cited by in corpus (25)

• Quantum Hall plateau transitions in disordered superconductors
• Localization and delocalization in dirty superconducting wires
• Keldysh action for disordered superconductors
• Tail States in a Superconductor with Magnetic Impurities
• Gap Fluctuations in Inhomogeneous Superconductors
• Excitation spectrum of Andreev billiards with a mixed phase space
• Weak localization of disordered quasiparticles in the mixed superconducting state
• Superconductors with Magnetic Impurities: Instantons and Sub-gap States
• Universality of delocalization in unconventional dirty superconducting wires with broken spin-rotation symmetry
• Localization of quasiparticles in a disordered vortex
• Quantum interference and the formation of the proximity effect in chaotic normal-metal/superconducting structures
• Superconductivity near a magnetic domain wall
• Localization from sigma-model geodesics
• Nonlinear $\sigma$ model for disordered superconductors
• Spectral characteristics of a fully-superconducting SQUIPT
• Mesoscopic fluctuations of the supercurrent in diffusive Josephson junctions
• Level statistics inside the core of a superconductive vortex
• Competition between zero bias anomaly and proximity effect in disordered systems
• Quasiparticle entropy in superconductor/normal metal/superconductor proximity junctions in the diffusive limit
• Quantum Mechanics with Random Imaginary Scalar Potential
• Crossovers between superconducting symmetry classes
• Interface dependence of the Josephson-current fluctuations in short SNS junctions
• Superconducting proximity effect in quantum wires without time-reversal symmetry
• Anomalous mesoscopic kinetics in disordered superconductors
• Phase coherence phenomena in superconducting films