Weak Localization Coexisting with a Magnetic Field in a Normal-Metal–Superconductor Microbridge

Дата и время публикации : 1995-04-12T09:35:25Z

Авторы публикации и институты :
P. W. Brouwer (Instituut-Lorentz, Leiden, The Netherlands)
C. W. J. Beenakker (Instituut-Lorentz, Leiden, The Netherlands)

Ссылка на журнал-издание: Phys.Rev.B 52 (1995) R3868
Коментарии к cтатье: 8 pages, REVTeX-3.0, 1 figure
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: A random-matrix theory is presented which shows that breaking time-reversal symmetry by itself does {em not} suppress the weak-localization correction to the conductance of a disordered metal wire attached to a superconductor. Suppression of weak localization requires applying a magnetic field as well as raising the voltage, to break both time-reversal symmetry and electron-hole degeneracy. A magnetic-field dependent contact resistance obscured this anomaly in previous numerical simulations.

Category: Physics