Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-04-16
J. Low Temp. Phys. 136, 435 (2004)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
8 pages, 9 figures, submitted to Journal of Low Temperature Physics
Scientific paper
10.1023/B:JOLT.0000041276.95355.
The distinctive quasiparticle distribution existing under nonequilibrium in a superconductor-insulator-normal metal-insulator-superconductor (SINIS) 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. The role of the degree of nonequilibrium, temperature, and materials choice as well as features like noise, switching time, and current and power gain are also addressed.
Beltram Fabio
Fazio Rosario
Giazotto Francesco
Heikkila Tero T.
Pekola Jukka P.
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