Superconducting switching due to a triplet component in the Pb/Cu/Ni/Cu/CoCr Fe Al spin-valve structure.

We report the superconducting properties of the CoCr Fe Al /Cu/Ni/Cu/Pb spin-valve structure the magnetic part of which comprises the Heusler alloy layer HA = CoCr Fe Al with a high degree of spin polarization (DSP) of the conduction band and a Ni layer of variable thickness. The separation between the superconducting transition curves measured for the parallel (α = 0°) and perpendicular (α = 90°) orientation of the magnetization of the HA and the Ni layers reaches up to 0.5 K (α is the angle between the magnetization of two ferromagnetic layers).