Josephson effect in superconducting constrictions with hybrid SF electrodes: peculiar properties determined by the misorientation of magnetizations

الأصل · EN

Josephson current in SFcFS junctions with arbitrary transparency of the constriction (c) is investigated. The emphasis is done on the analysis of the supercurrent dependencies on the misorientation angle θ between the in-plane magnetizations of diffusive ferromagnetic layers (F). It is found that the current-phase relation I(ϕ) may be radically modified with the θ variation: the harmonic I₁ ϕ vanishes for definite value of θ provided for identical orientation of the magnetizations (θ=0) the junction is in the "π" state. The Josephson current may exhibit a nonmonotonic dependence on the misorientation angle both for realization of "0 " and "π" state at θ=0. We also analyze the effect of exchange field induced enhancement of the critical current which may occur in definite range of θ.