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

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

2004-05-12

arxiv.org/abs/cond-mat/0405250v1

Physics

Condensed Matter

Superconductivity

Scientific paper

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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