Josephson current in ballistic heterostructures with spin-active interfaces

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dc.creatorKalenkov, Mikhail S.
dc.creatorGalaktionov, Artem V.
dc.creatorZaikin, Andrei D.
dc.date2008-11-05
dc.date2009-01-30
dc.date.accessioned2026-07-07T12:35:26Z
dc.date.available2026-07-07T12:35:26Z
dc.descriptionWe develop a general microscopic theory of dc Josephson effect in hybrid SNS structures with ballistic electrodes and spin-active NS interfaces. We establish a direct relation between the spectrum of Andreev levels and the Josephson current which contains complete information about non-trivial interplay between Andreev reflection and spin-dependent interface scattering. The system exhibits a rich structure of properties sensitive to spin-dependent barrier transmissions, spin-mixing angles, relative magnetization orientation of interfaces and the kinematic phase of scattered electrons. We analyze the current-phase relations and identify the conditions for the presence of a pi-junction state in the systems under consideration. We also analyze resonant enhancement of the supercurrent in gate-voltage-driven nanojunctions. As compared to the non-magnetic case, this effect can be strongly modified by spin-dependent scattering at NS interfaces.
dc.description11 pages, 9 figures; version published in Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/0811.0685
dc.identifierhttp://arxiv.org/abs/0811.0685
dc.identifierPhys. Rev. B 79, 014521 (2009)
dc.identifierdoi:10.1103/PhysRevB.79.014521
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217767
dc.subjectSuperconductivity
dc.titleJosephson current in ballistic heterostructures with spin-active interfaces
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