Spin-Wave Emission from Vortex Cores under Static Magnetic Bias Fields

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dc.contributor.authorMayr, Sinacs
dc.contributor.authorFlajšman, Lukášcs
dc.contributor.authorFinizio, Simonecs
dc.contributor.authorHrabec, Alešcs
dc.contributor.authorWeigand, Markuscs
dc.contributor.authorForster, Johannescs
dc.contributor.authorStoll, Hermanncs
dc.contributor.authorHeyderman, Laura J.cs
dc.contributor.authorUrbánek, Michalcs
dc.contributor.authorWintz, Sebastiancs
dc.contributor.authorRaabe, Jorgcs
dc.coverage.issue4cs
dc.coverage.volume21cs
dc.date.accessioned2021-11-12T22:56:39Z
dc.date.available2021-11-12T22:56:39Z
dc.date.issued2021-02-24cs
dc.description.abstractWe studied the influence of a static in-plane magnetic field on the alternating-field-driven emission of nanoscale spin waves from magnetic vortex cores. Time-resolved scanning transmission X-ray microscopy was used to image spin waves in disk structures of synthetic ferrimagnets and single ferromagnetic layers. For both systems, it was found that an increasing magnetic bias field continuously displaces the wave-emitting vortex core from the center of the disk toward its edge without noticeably altering the spin-wave dispersion relation. In the case of the single-layer disk, an anisotropic lateral expansion of the core occurs at higher magnetic fields, which leads to a directional rather than radial-isotropic emission and propagation of waves. Micromagnetic simulations confirm these findings and further show that focusing effects occur in such systems, depending on the shape of the core and controlled by the static magnetic bias field.en
dc.formattextcs
dc.format.extent1584-1590cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationNano Letters. 2021, vol. 21, issue 4, p. 1584-1590.en
dc.identifier.doi10.1021/acs.nanolett.0c03740cs
dc.identifier.issn1530-6992cs
dc.identifier.other171145cs
dc.identifier.urihttp://hdl.handle.net/11012/202264
dc.language.isoencs
dc.publisherAmerican Chemical Societycs
dc.relation.ispartofNano Letterscs
dc.relation.urihttps://pubs.acs.org/doi/10.1021/acs.nanolett.0c03740cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1530-6992/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectmagnetization dynamicsen
dc.subjectmagnonicsen
dc.subjectX-ray microscopyen
dc.subjectspin wavesen
dc.subjectvortex coresen
dc.titleSpin-Wave Emission from Vortex Cores under Static Magnetic Bias Fieldsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-171145en
sync.item.dbtypeVAVen
sync.item.insts2021.11.12 23:56:39en
sync.item.modts2021.11.12 22:49:07en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Sdílená laboratoř RP1cs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav fyzikálního inženýrstvícs
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Ústav fyzikálního inženýrství