Controllable 0−π phase shifter based on induced triplet superconductivity

It has been shown in Ref. [1] that the combination of the condensate motion, the exchange field and the Rashba spin-orbit coupling (SOC) induces generation of the spin-triplet superconducting correlations, which can be detected via the unusual behavior of Josephson effect and local density of states in superconductor/ferromagnet structures. In this work we predict that such generation is a more general phenomenon, which takes place not only for intrinsic SOC, like Rashba SOC, but also for extrinsic SOC made by impurities. We propose a controllable 0−π phase shifter based on induced correlations. This shifter is controlled by relative directions of the condensate momentum in superconducting leads.