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Spin polarized tunneling in ferromagnet/unconventional superconductor junctions

Igor Zutic, Oriol T. Valls

cond-mat.supr-conarXiv:cond-mat/9808285

Abstract

We study tunneling in ferromagnet/unconventional superconductor (F/S) junctions. We include the effects of spin polarization, interfacial resistance, and Fermi wavevector mismatch (FWM) between the F and S regions. Andreev reflection (AR) at the F/S interface, governing tunneling at low bias voltage, is strongly modified by these parameters. The conductance exhibits a very wide variety of features as a function of applied voltage.

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