Nonequilibrium spin-dependent phenomena in mesoscopic superconductor–normal metal tunnel structures

摘要: We analyze the broad range of spin-dependent nonequilibrium transport properties hybrid systems composed a normal region tunnel coupled to two superconductors with exchange fields induced by proximity thin ferromagnetic layers and highlight its functionalities. By calculating quasiparticle distribution functions in region, we find that they are spin dependent strongly sensitive relative angle between superconductors. The impact inelastic collisions on their is addressed. As result, electric current flowing through system found be fields, giving rise huge value magnetoresistance. Moreover, presents complete polarization wide bias voltages, even quasiequilibrium case. In limit, parametrize distributions an �effective� temperature, which turns out dependent, though quite collisions. coupling additional superconducting electrode, show it possible implement spin-polarized source both species, depending voltages applied.