SAMOKHVALOV, A. V.; BUZDIN, Alexandre I.

doi:10.1088/0953-2048/24/2/024003

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SAMOKHVALOV, A. V.
Institute for Physics of Microstructures of the RAS

BUZDIN, Alexandre I.
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Institut universitaire de France [IUF]

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Superconductor Science and Technology. 2011-01-19, vol. 24, n° 2, p. 024003 (7 p.)

IOP Publishing

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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.< Leer menos

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Josephson current and $\pi-$state in ferromagnet with embedded superconducting nanoparticles

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