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dc.contributor.authorAmundsen, Morten
dc.contributor.authorLinder, Jacob
dc.date.accessioned2017-11-09T09:08:14Z
dc.date.available2017-11-09T09:08:14Z
dc.date.created2016-12-15T14:29:43Z
dc.date.issued2016
dc.identifier.citationScientific Reports. 2016, 6 .nb_NO
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/11250/2465109
dc.description.abstractAn extension of quasiclassical Keldysh-Usadel theory to higher spatial dimensions than one is crucial in order to describe physical phenomena like charge/spin Hall effects and topological excitations like vortices and skyrmions, none of which are captured in one-dimensional models. We here present a numerical finite element method which solves the non-linearized 2D and 3D quasiclassical Usadel equation relevant for the diffusive regime. We show the application of this on three model systems with non-trivial geometries: (i) a bottlenecked Josephson junction with external flux, (ii) a nanodisk ferromagnet deposited on top of a superconductor and (iii) superconducting islands in contact with a ferromagnet. In case (i), we demonstrate that one may control externally not only the geometrical array in which superconducting vortices arrange themselves, but also to cause coalescence and tune the number of vortices. In case (iii), we show that the supercurrent path can be tailored by incorporating magnetic elements in planar Josephson junctions which also lead to a strong modulation of the density of states. The finite element method presented herein paves the way for gaining insight in physical phenomena which have remained largely unexplored due to the complexity of solving the full quasiclassical equations in higher dimensions.nb_NO
dc.language.isoengnb_NO
dc.publisherNature Publishing Groupnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleGeneral solution of 2D and 3D superconducting quasiclassical systems: Coalescing vortices and nanoisland geometriesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber13nb_NO
dc.source.volume6nb_NO
dc.source.journalScientific Reportsnb_NO
dc.identifier.doi10.1038/srep22765
dc.identifier.cristin1413524
dc.description.localcode© 2016 The Authors. Published by Nature Publishing Group. This is an open access article licensed under a Creative Commons Attribution 4.0 International Licensenb_NO
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1


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