Ferromagnetic Nanowires with Superconducting Electrodes

Details Ferromagnetic Nanowires with Superconducting Electrodes Ferromagnetic Nanowires with Superconducting Electrodes

1999-12-20

arxiv.org/abs/cond-mat/9912370v1

Physics

Condensed Matter

Superconductivity

10 pages, 6 figures, to appear in J. Low-Temp. Phys

Scientific paper

The proximity effect in mesoscopic ferromagnet/superconductor ($FS$) Ni/Al structures of various geometries was studied experimentally on both $F$- and $S$-sides of the structures. Samples with a wide range of interface transparency were fabricated. The dependence of the effect on $FS$ interface transparency was investigated. The amplitude of this effect was found to be larger than expected from classical theory of proximity effect. Preliminary experiments showed no phase-sensitive oscillations in Andreev interferometer geometry. Various theoretical models are discussed.

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