Non-ideal artificial phase discontinuity in long Josephson 0-kappa-junctions

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dc.creatorGaber, T.
dc.creatorGoldobin, E.
dc.creatorSterck, A.
dc.creatorKleiner, R.
dc.creatorKoelle, D.
dc.creatorSiegel, M.
dc.creatorNeuhaus, M.
dc.date2004-08-10
dc.date2005-05-20
dc.date.accessioned2026-07-07T02:59:39Z
dc.date.available2026-07-07T02:59:39Z
dc.descriptionWe investigate the creation of an arbitrary $κ$-discontinuity of the Josephson phase in a long Nb-AlO_x-Nb Josephson junction (LJJ) using a pair of tiny current injectors, and study the formation of fractional vortices formed at this discontinuity. The current I_inj, flowing from one injector to the other, creates a phase discontinuity kappa ~ I_inj. The calibration of injectors is discussed in detail. The small but finite size of injectors leads to some deviations of the properties of such a 0-kappa-LJJ from the properties of a LJJ with an ideal kappa-discontinuity. These experimentally observed deviations in the dependence of the critical current on I_inj$ and magnetic field can be well reproduced by numerical simulation assuming a finite injector size. The physical origin of these deviations is discussed.
dc.descriptionSubmitted to Phys. Rev. B (12 figures). v 2: refs updated, long eqs fixed v 3: major changes, fractional vortex dynamics excluded
dc.identifierhttps://arxiv.org/abs/cond-mat/0408214
dc.identifierhttp://arxiv.org/abs/cond-mat/0408214
dc.identifierPhys. Rev. B 72, 054522 (2005)
dc.identifierdoi:10.1103/PhysRevB.72.054522
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24595
dc.subjectSuperconductivity
dc.titleNon-ideal artificial phase discontinuity in long Josephson 0-kappa-junctions
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