Voltage tuning of spin and charge supercurrents in a spin-active Josephson Junction

Abstract

Charge and spin-supercurrents in a spin-active Josephson junction is investigated through the quasiclassical theory of superconductivity. Analytical work has been performed and numerical results are presented, showing that through the application of a voltage bias across the normal metal weal link, the distribution function in the normal metal is brought out of equilibrium and the magnitude of the supercurrents decreases. The transition to a π-junction is controllable via the voltage bias as a consequence.