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

doi:10.1103/PhysRevLett.109.237006

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MEL'NIKOV, A. S.
Institute for Physics of Microstructures of the RAS

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

KUZNETSOVA, S. M.
Institute for Physics of Microstructures of the RAS

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Article de revue

Ce document a été publié dans

Physical Review Letters. 2012-12-05, vol. 109, n° 23, p. 237006 (1-5)

American Physical Society

Résumé en anglais

We study peculiarities of proximity effect in clean superconductor -- ferromagnet structures caused by either spatial or momentum dependence of the exchange field. Even a small modulation of the exchange field along the quasiparticle trajectories is shown to provide a long range contribution to the supercurrent due to the specific interference of particle- and hole- like wave functions. The momentum dependence of the exchange field caused by the spin -- orbit interaction results in the long -- range superconducting correlations even in the absence of ferromagnetic domain structure and can explain the recent experiments on ferromagnetic nanowires.< Réduire

Mots clés en anglais

74.45.+c

Proximity effects

Andreev reflection

SN and SNS junctions

74.78.Na

Mesoscopic and nanoscale systems

85.25.Cp

Josephson devices

DOI

http://dx.doi.org/10.1103/PhysRevLett.109.237006

Projet Européen

New Century of Superconductivity: Ideas, Materials, Technologies

Origine

Importé de hal

Unités de recherche

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