Multipair DC-Josephson Resonances in a biased all-superconducting Bijunction
Abstract
An all-superconducting bijunction consists of a central superconductor contacted to two lateral superconductors, such that non-local crossed Andreev reflection is operating. Then new correlated transport channels for the Cooper pairs appear in addition to those of separated conventional Joseph- son junctions. We study this system in a configuration where the superconductors are connected through gate-controllable quantum dots. Multipair phase-coherent resonances and phase-dependent multiple Andreev reflections are both obtained when the voltages of the lateral superconductors are commensurate, and they add to the usual local dissipative transport due to quasiparticles. The two-pair resonance (quartets) as well as some other higher order multipair resonances are {\pi}-shifted at low voltage. Dot control can be used to dramatically enhance the multipair current when the voltages are resonant with the dot levels.
Keywords
Cite
@article{arxiv.1301.2344,
title = {Multipair DC-Josephson Resonances in a biased all-superconducting Bijunction},
author = {T. Jonckheere and J. Rech and T. Martin and B. Douçot and D. Feinberg and R. Mélin},
journal= {arXiv preprint arXiv:1301.2344},
year = {2013}
}
Comments
6 pages