Micromagnetics of magnetic chemical modulations in soft-magnetic cylindrical nanowires

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dc.contributor.authorÁlvaro Gómez, Laura
dc.contributor.authorRuiz Gómez, S.
dc.contributor.authorFernández González, Claudia
dc.contributor.authorSchobitz, M.
dc.contributor.authorMille, N.
dc.contributor.authorHurst, J.
dc.contributor.authorTiwari, D.
dc.contributor.authorDe Riz, A.
dc.contributor.authorAndersen, I. M.
dc.contributor.authorBachmann, J.
dc.contributor.authorCagnon, L.
dc.contributor.authorFoerster, M.
dc.contributor.authorBelkhou, R.
dc.contributor.authorToussaint, J-C
dc.contributor.authorThirion, C.
dc.contributor.authorMasseboeuf, A.
dc.contributor.authorGusakova, D.
dc.contributor.authorPérez García, Lucas
dc.contributor.authorFruchart, O.
dc.date.accessioned2023-06-22T11:05:57Z
dc.date.available2023-06-22T11:05:57Z
dc.date.issued2022-08-26
dc.description©2022 American Physical Society We acknowledge support from the French RENATECH network, the team of the Nanofab platform (CNRS Neel institut) , and the CNRS-CEA METSA French network (FR CNRS 3507) . The project received financial support from the French National Research Agency (Grant No. ANR-17-CE24-0017-01; MATEMAC-3D) , from the Spanish MCIN/AEI/10.13039/501100011033 under Grant No. PID2020-117024GB-C43, and from the Comunidad de Madrid (Spain) through the project NanoMagCOST (CM S2018/NMT-4321) . S.R.-G. gratefully acknowledges the financial support of the Alexander von Humboldt Foundation.
dc.description.abstractWe analyze the micromagnetics of short longitudinal modulations of a high-magnetization material in cylindrical nanowires made of a soft-magnetic material of lower magnetization such as permalloy, combining magnetic microscopy, analytical modeling, and micromagnetic simulations. The mismatch of magnetization induces curling of magnetization around the axis in the modulations, in an attempt to screen the interfacial magnetic charges. The curling angle increases with modulation length, until a plateau is reached with nearly full charge screening for a specific length scale delta(mod), larger than the dipolar exchange length of any of the two materials. The curling circulation can be switched by the Oersted field arising from a charge current with typical magnitude 10(12) A/m(2) for a diameter of similar to 100 nm, and reaching a maximum for delta(mod).
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.sponsorshipComunidad de Madrid
dc.description.sponsorshipAgence Nationale de la Recherche (ANR)
dc.description.sponsorshipCentre National de la Recherche Scientifique (CNRS)/CEA
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/74880
dc.identifier.doi10.1103/PhysRevB.106.054433
dc.identifier.issn2469-9950
dc.identifier.officialurlhttp://dx.doi.org/10.1103/PhysRevB.106.054433
dc.identifier.relatedurlhttps://journals.aps.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/72102
dc.issue.number5
dc.journal.titlePhysical review B
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.projectIDPID2020-117024GB-C43
dc.relation.projectIDNANOMAGCOST-CM(S2018/NMT4321)
dc.relation.projectID(ANR-17-CE24-0017-01; MATEMAC-3D)
dc.relation.projectIDFR CNRS 3507
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordDomain-wall
dc.subject.keywordGiant magnetoresistance
dc.subject.keywordConfigurations
dc.subject.keywordDependence
dc.subject.keywordBeamline
dc.subject.keywordReversal
dc.subject.keywordArrays
dc.subject.keywordLength
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleMicromagnetics of magnetic chemical modulations in soft-magnetic cylindrical nanowires
dc.typejournal article
dc.volume.number106
dspace.entity.typePublication
relation.isAuthorOfPublication01b88344-8278-4947-9475-d5b2a652b9d7
relation.isAuthorOfPublication.latestForDiscovery01b88344-8278-4947-9475-d5b2a652b9d7
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