Crossover from weak localization to weak antilocalization in a disordered microbridge

2003/01/23 by M. G. A. Crawford, P. W. Brouwer, C. W. J. Beenakker
Physics and Astronomy · #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.67.115313

published as Phys. Rev. B 67, 115313 (2003) · 5 pages, RevTeX; 2 figures

arxiv created 2003/01/23 · arxiv updated 2009/11/30

Abstract

We calculate the weak localization correction in the double crossover to broken time-reversal and spin-rotational symmetry for a disordered microbridge or a short disordered wire using a scattering-matrix approach. Whereas the correction has universal limiting values in the three basic symmetry classes, the functional form of the magnetoconductance is affected by eventual non-homogeneities in the microbridge.

Related

• Weak localization coexisting with a magnetic field in a normal-metal–superconductor microbridge
• Search for Two-Scale Localization in Disordered Wires in a Magnetic Field
• Insensitivity to time-reversal symmetry breaking of universal conductance fluctuations with Andreev reflection
• Localization in disordered superconducting wires with broken spin-rotation symmetry
• Two-scale localization of wave functions in disordered wires in a weak magnetic field