Fabrication and Characterization of Short Josephson Junctions with Stepped Ferromagnetic Barrier

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dc.creatorPeralagu, Uthayasankaran
dc.creatorWeides, Martin
dc.date2008-01-03
dc.date2008-01-18
dc.date.accessioned2026-07-07T08:55:27Z
dc.date.available2026-07-07T08:55:27Z
dc.descriptionWe present novel low-T_c superconductor-insulator-ferromagnet-superconductor (SIFS) Josephson junctions with planar and stepped ferromagnetic interlayer. We optimized the fabrication process to set a step in the ferromagnetic layer thickness. Depending on the thickness of the ferromagnetic layer the ground state of the SIFS junction has a phase drop of either 0 or pi. So-called 0-pi Josephson junctions, in which 0 and pi ground states compete with each other, were obtained. These stepped junctions may have a double degenerate ground state, corresponding to a vortex of supercurrent circulating clock- or counterclockwise and creating a magnetic flux which carries a fraction of the magnetic flux quantum Φ_0. Here, we limit the presentation to static properties of short junctions.
dc.descriptionmodified version, small changes
dc.identifierhttps://arxiv.org/abs/0801.0515
dc.identifierhttp://arxiv.org/abs/0801.0515
dc.identifierIEEE/CSC & ESAS News forum, No. 3, ST27, January 2008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/146275
dc.subjectSuperconductivity
dc.titleFabrication and Characterization of Short Josephson Junctions with Stepped Ferromagnetic Barrier
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