Giazotto F, Heikkilä T T, Taddei F, Fazio Rosario, Pekola J P, Beltram F
NEST-INFM & Scuola Normale Superiore, I-56126 Pisa, Italy.
Phys Rev Lett. 2004 Apr 2;92(13):137001. doi: 10.1103/PhysRevLett.92.137001. Epub 2004 Mar 29.
The distinctive quasiparticle distribution existing under nonequilibrium in a superconductor-insulator-normal metal-insulator-superconductor mesoscopic line is proposed as a novel tool to control the supercurrent intensity in a long Josephson weak link. We present a description of this system in the framework of the diffusive-limit quasiclassical Green-function theory and take into account the effects of inelastic scattering with arbitrary strength. Supercurrent enhancement and suppression, including a marked transition to a pi junction, are striking features leading to a fully tunable structure.
超导-绝缘体-正常金属-绝缘体-超导介观线中存在的非平衡态下独特的准粒子分布被提议作为一种控制长约瑟夫森弱链接中超电流强度的新工具。我们在扩散极限准经典格林函数理论框架内对该系统进行了描述，并考虑了任意强度的非弹性散射效应。超电流增强和抑制，包括向π结的显著转变，是导致完全可调结构的显著特征。
