期刊论文详细信息
WEAK-LOCALIZATION COEXISTING WITH A MAGNETIC-FIELD IN A NORMAL-METAL-SUPERCONDUCTOR MICROBRIDGE | |
Note | |
关键词: CONDUCTIVITY; CONDUCTORS; | |
DOI : 10.1103/PhysRevB.52.R3868 | |
来源: SCIE |
【 摘 要 】
A random-matrix theory is presented which shows that breaking time-reversal symmetry by itself does 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.
【 授权许可】
Free