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Spin polarized current and Andreev transmission in planar superconducting-ferromagnetic Nb-Ni junctions

E. M. Gonzalez·A. Dominguez-Folgueras·F. J. Palomares·R. Escudero·J. E. Villegas·J. M. Gonzalez·J. Ferrer·F. Guinea·J. L. Vicent
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Abstract

We have measured and modeled, using three different approaches, the tunneling current in a Nb/NbxOy/Ni planar tunnel junction. The experimental data could be fitted and the correct current polarization could be extracted using a simple quasiclassical model, even in the absence of an applied magnetic field. We also discuss the microscopic structure of the barrier.

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E. M. Gonzalez, A. Dominguez-Folgueras, F. J. Palomares, R. Escudero, J. E. Villegas, J. M. Gonzalez, J. Ferrer, F. Guinea, J. L. Vicent. 2004-05-12. Spin polarized current and Andreev transmission in planar superconducting-ferromagnetic Nb-Ni junctions. https://arxiv.org/abs/cond-mat/0405250

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