Crossover from weak localization to weak antilocalization in a disordered microbridge

M. G. A. Crawford; P. W. Brouwer; C. W. J. Beenakker

doi:10.1103/PhysRevB.67.115313

Crossover from weak localization to weak antilocalization in a disordered microbridge

M. G. A. Crawford, P. W. Brouwer, and C. W. J. Beenakker

Phys. Rev. B 67, 115313 – Published 17 March 2003

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 nonhomogeneities in the microbridge.

Received 18 September 2002

DOI:https://doi.org/10.1103/PhysRevB.67.115313

Authors & Affiliations

M. G. A. Crawford and P. W. Brouwer

Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853-2501

C. W. J. Beenakker

Instituut-Lorentz, Leiden University, P.O. Box 9506, 2300 RA Leiden, The Netherlands

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Vol. 67, Iss. 11 — 15 March 2003

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