Triplet contribution to the Josephson current in the nonequilibrium superconductor/ferromagnet/superconductor junction

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 condition the standard supercurrent, carried by the singlet part of current-carrying density of states, 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 $\pi$-states.

4 pages, 1 figure

References in corpus (1)

• Nonequilibrium transport in mesoscopic multi-terminal SNS Josephson junctions

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