Triplet contribution to the Josephson current in the nonequilibrium SFS junction

I. V. Bobkova; A. M. Bobkov

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arXiv · 1008.1251

Triplet contribution to the Josephson current in the nonequilibrium SFS junction

I. V. Bobkova·A. M. Bobkov

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Abstract

The Josephson current through a long s-wave superconductor/weak ferromagnet/s-wave superconductor weak link is studied theoretically in the regime of nonequilibrium spin-dependent occupation of electron states in the ferromagnetic intelayer. While under the considered nonequilibrium conditions the standard supercurrent, carried by the singlet part of current-carrying density of states, practically is not modified, the additional supercurrent flowing via the triplet part of the current-carrying density of states appears. Depending on voltage, controlling the particular form of spin-dependent nonequilibrium in the interlayer, this additional current can enhance or reduce the usual current of the singlet component and also switch the junction between $0$- and $π$-states.

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I. V. Bobkova, A. M. Bobkov. 2010-08-06. Triplet contribution to the Josephson current in the nonequilibrium SFS junction. https://arxiv.org/abs/1008.1251

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