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Article Dans Une Revue Physical Review Letters Année : 2012

Interference phenomena and long - range proximity effect in clean superconductor -- ferromagnet systems

Résumé

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.

Dates et versions

hal-00748245 , version 1 (06-12-2012)

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Citer

A. S. Mel'Nikov, A. V. Samokhvalov, S. M. Kuznetsova, Alexandre I. Buzdin. Interference phenomena and long - range proximity effect in clean superconductor -- ferromagnet systems. Physical Review Letters, 2012, 109 (23), pp.237006 (1-5). ⟨10.1103/PhysRevLett.109.237006⟩. ⟨hal-00748245⟩

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