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Andreev current enhancement and subgap conductance of superconducting<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">SFN</mml:mi></mml:math>hybrid structures in the presence of a small spin-splitting magnetic field
We investigate the subgap transport properties of a $S$-$F$-${N}_{\mathrm{e}}$ structure. Here $S$(${N}_{\mathrm{e}}$) is a superconducting (normal) electrode, and $F$ is either a ferromagnet or a normal wire in the presence of an exchange or a spin-splitting Zeeman field, respectively. By solving the quasiclassical equations we first analyze the behavior of …