Spontaneous currents and half-integer Shapiro steps in Superconductor-Ferromagnet-Superconductor 0-pi Josephson junctions

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dc.creatorFrolov, S. M.
dc.creatorVan Harlingen, D. J.
dc.creatorBolginov, V. V.
dc.creatorOboznov, V. A.
dc.creatorRyazanov, V. V.
dc.date2005-05-31
dc.date.accessioned2026-07-07T03:05:26Z
dc.date.available2026-07-07T03:05:26Z
dc.descriptionWe study Superconductor-Ferromagnet-Superconductor (Nb-Cu0.47 Ni0.53-Nb) Josephson junctions with spatial variations in the barrier thickness. Critical current vs. magnetic flux diffraction patterns indicate that the critical current density changes sign along the width of the junctions, creating interfaces between 0 and pi junction regions around which spontaneous currents can circulate. Shapiro steps observed at half-integer Josephson voltages can be explained by the phase-locking of the spontaneous circulating currents to the applied rf modulation.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0506003
dc.identifierhttp://arxiv.org/abs/cond-mat/0506003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26447
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleSpontaneous currents and half-integer Shapiro steps in Superconductor-Ferromagnet-Superconductor 0-pi Josephson junctions
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