Physics – Condensed Matter – Superconductivity
Scientific paper
2010-09-03
Superconductor Science and Technology, v.24, n.2, pp.024003-1-024003-7 (2011)
Physics
Condensed Matter
Superconductivity
16 pages, 5 figures, Submitted to Superconductor Science and Technology
Scientific paper
On the basis of Usadel equations we investigate superconductor/ferromagnet/superconductor (S/F/S) hybrid systems which consist of superconducting nanostructures (spheres, rods) embedded in ferromagnetic metal. The oscillations of the critical current of the S/F/S Josephson junctions with the thickness of ferromagnetic spacer between superconducting electrodes are studied. We demonstrate that the $\pi $ state can be realized in such structures despite of a dispersion of the distances between different parts of the electrodes. The transitions between 0 and $\pi $ states at some thickness of ferromagnetic spacer can be triggered by temperature variation.
Buzdin Alexandre I.
Samokhvalov Alexey V.
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