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Electron cooling in diffusive normal metal–superconductor tunnel junctions with a spin-valve ferromagnetic interlayer
We investigate heat and charge transport through a diffusive SIF${}_{1}$F${}_{2}$N tunnel junction, where N (S) is a normal (superconducting) electrode, I is an insulator layer, and F${}_{1,2}$ are two ferromagnets with arbitrary direction of magnetization. The flow of an electric current in such structures at subgap bias is accompanied by …