Spin analog of the controlled Josephson charge current
Sudhansu S. Mandal, Soumya P. Mukherjee
Abstract
We propose a controlled Josephson spin current across the junction of two non-centrosymmetric superconductors like CePt3Si. The Josephson spin current arises due to direction dependent tunneling matrix element and different momentum dependent phases of the triplet components of the gap function. Its modulation with the angle ξbetween the noncentrosymmetric axes of two superconductors is proportional to ξ. This particular dependence on ξmay find application of the proposed set-up in making a Josephson spin switch.
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