Proximity effect and multiple Andreev reflections in diffusive superconductor-normal-metal-superconductor junctions

被引：72
|
作者：
Cuevas, J. C.
Hammer, J.
Kopu, J.
Viljas, J. K.
Eschrig, M.
机构：
[1] Univ Karlsruhe, Inst Theoret Festkorperphys, D-76128 Karlsruhe, Germany
[2] Univ Autonoma Madrid, Dept Fis Teor Materia Condensada, E-28049 Madrid, Spain
[3] Helsinkin Univ Technol, Low Temp Lab, FIN-02015 Helsinki, Finland
来源：
PHYSICAL REVIEW B | 2006年 / 73卷 / 18期
基金：
美国国家卫生研究院;
关键词：
D O I：
10.1103/PhysRevB.73.184505
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a theory of the current-voltage characteristics in diffusive superconductor-normal-metal-superconductor junctions. By solving the time-dependent Usadel equations we are able to describe the phase-coherent transport for arbitrary length of the normal wire. We show how the interplay between proximity effect and multiple Andreev reflections gives rise to a rich subgap structure in the conductance and how it is revealed in the nonequilibrium distribution function.
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页数：6
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