Random matrix theory of the proximity effect in disordered wires

Article

关键词: SCANNING-TUNNELING-MICROSCOPY;    QUANTUM TRANSPORT;    WAVE LOCALIZATION;    LOCAL-DENSITY;    SUPERCONDUCTOR;    STATES;    SYSTEMS;    SCATTERING;    JUNCTIONS;   

DOI  :  10.1103/PhysRevB.67.024410

来源: SCIE

【 摘 要 】

We study analytically the local density of states in a disordered normal-metal wire (N) at ballistic distance to a superconductor (S). Our calculation is based on a scattering-matrix approach, which concerns for wave-function localization in the normal metal, and extends beyond the conventional semiclassical theory based on Usadel and Eilenberger equations. We also analyze how a finite transparency of the NS interface modifies the spectral proximity effect and demonstrate that our results agree in the dirty diffusive limit with those obtained from the Usadel equation.

【 授权许可】

Free