Insensitivity to Time-Reversal Symmetry Breaking of Universal Conductance Fluctuations with Andreev Reflection

Abstract

Numerical simulations of conduction through a disordered microbridge between a normal metal and a superconductor have revealed an anomalous insensitivity of the conductance fluctuations to a magnetic field. A theory for the anomaly is presented: Both an exact analytical calculation (using random-matrix theory) and a qualitative symmetry argument (involving the exchange of time-reversal for reflection symmetry).

arXiv comment8 pages, REVTeX-3.0, 2 figures

References in corpus (4)

• Mesoscopic Transport Through Ballistic Cavities: A Random S-Matrix Theory Approach
• Universal Quantum Signatures of Chaos in Ballistic Transport
• Conductance Fluctuations, Weak Localization, and Shot Noise for a Ballistic Constriction in a Disordered Wire
• Weak Localization Coexisting with a Magnetic Field in a Normal-Metal--Superconductor Microbridge

Cited by in corpus (12)

• Random-Matrix Theory of Quantum Transport
• Novel Symmetry Classes in Mesoscopic Normal-Superconducting Hybrid Structures
• Random Matrix Theories in Quantum Physics: Common Concepts
• Diagrammatic method of integration over the unitary group, with applications to quantum transport in mesoscopic systems
• Distribution functions and current-correlations in normal-metal--superconductor hetero-structures
• Crossover from the chiral to the standard universality classes in the conductance of a quantum wire with random hopping only
• Phase transitions in the distribution of the Andreev conductance of superconductor-metal junctions with multiple transverse modes
• Conductance fluctuations in mesoscopic normal-metal/superconductor samples
• Superconducting Proximity Effect and Universal Conductance Fluctuations
• Effects of Andreev reflection on the conductance of quantum-chaotic dots
• Anomalous mesoscopic kinetics in disordered superconductors
• Mesoscopic fluctuations in superconductor-topological insulator Josephson junctions