WEAK-LOCALIZATION COEXISTING WITH A MAGNETIC-FIELD IN A NORMAL-METAL-SUPERCONDUCTOR MICROBRIDGE

Authors
BROUWER PW BEENAKKER CWJ
Citation
Pw. Brouwer et Cwj. Beenakker, WEAK-LOCALIZATION COEXISTING WITH A MAGNETIC-FIELD IN A NORMAL-METAL-SUPERCONDUCTOR MICROBRIDGE, Physical review. B, Condensed matter, 52(6), 1995, pp. 3868-3871
Citations number
16
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
52
Issue
6
Year of publication
1995
Pages
3868 - 3871
Database
ISI
SICI code
0163-1829(1995)52:6<3868:WCWAMI>2.0.ZU;2-Z
Abstract
A random-matrix theory is presented which shows that breaking time-rev ersal symmetry by itself does not suppress the weak-localization corre ction to the conductance of a disordered metal wire attached to a supe rconductor. Suppression of weak localization requires applying a magne tic field as well as raising the voltage, to break both time-reversal symmetry and electron-hole degeneracy. A magnetic-field-dependent cont act resistance obscured this anomaly in previous numerical simulations .