SAMOKHVALOV, A. V.; MEL'NIKOV, A. S.; BUZDIN, Alexandre I.

doi:10.1007/s10948-013-2220-6

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

MEL'NIKOV, A. S.
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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Ce document a été publié dans

Journal of Superconductivity and Novel Magnetism. 2013, vol. 26, n° 9, p. 2851-5852

Springer Verlag

Résumé en anglais

On the basis of Usadel equations, we consider superconductivity nucleation and Josephson current in multiply connected mesoscopic superconductor/ferromagnet (S/F) hybrids. We demonstrate that the exchange field can provoke an increase in the critical temperature Tc of the superconducting transition in the magnetic field. We study the Josephson effect in S/F composites and demonstrate that the negative sign of the critical current (π state) can be realized in such structures despite a dispersion of the distances between different segments of superconducting electrodes.< Réduire

Mots clés en anglais

SF hybrids

Usadel equations

Little-Parks oscillations

π state

DOI

http://dx.doi.org/10.1007/s10948-013-2220-6

Projet Européen

New Century of Superconductivity: Ideas, Materials, Technologies

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Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798