Insensitivity to time-reversal symmetry breaking of universal conductance fluctuations with Andreev reflection

1995/04/12 by Piet W. Brouwer, P. W. Brouwer, C. W. J. Beenakker
Computer Science · Physics and Astronomy · #Nonlinear Dynamics and Pattern Formation #Quantum Mechanics and Applications #Quantum and electron transport phenomena #cond-mat

paper · pdf · doi:10.1103/physrevb.52.16772

published as Phys.Rev.B 52 (1995) 16772 · 8 pages, REVTeX-3.0, 2 figures

arxiv created 1995/04/12 · openalex publication_date 1995/12/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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).

Citations

• Weak localization coexisting with a magnetic field in a normal-metal–superconductor microbridge

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