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Spin reversal effect in hybrid s ± -wave/p-wave Josephson junction

We report a theoretical study on a hybrid Josephson junction consisting of a proposed s ± -wave ferropnictide superconductor and a p-wave superconductor. It is found that the relative π phase shift intrinsic to the s ± -wave pairing can lead to an accumulated spin reversal effect at the junction interface and that the critical current has a vanishing point with the variation of the ratio of the interface resistances for each band. The spin reversal effect also appears with an increase of temperature and meanwhile the critical current exhibits a reentrant behavior. These findings can not appear for a usual s-wave state, so that they can be used to discriminate the s ± -wave pairing in superconducting ferropnictides from the conventional s-wave symmetry.