Spin wave propagation in corrugated waveguides

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dc.contributor.authorTurčan, Igorcs
dc.contributor.authorFlajšman, Lukášcs
dc.contributor.authorWojewoda, Ondřejcs
dc.contributor.authorRoučka, Václavcs
dc.contributor.authorMan, Ondřejcs
dc.contributor.authorUrbánek, Michalcs
dc.coverage.issue9cs
dc.coverage.volume118cs
dc.date.accessioned2021-08-30T21:53:59Z
dc.date.available2021-08-30T21:53:59Z
dc.date.issued2021-03-01cs
dc.description.abstractCurvature-induced effects allow us to tailor the static and dynamic response of a magnetic system with a high degree of freedom. We study corrugated magnonic waveguides deposited on a sinusoidally modulated substrate prepared by focused electron beam-induced deposition. The curvature of the waveguides with thicknesses comparable to the amplitude of modulation modifies the contributions of dipolar and exchange energies and results in an effective anisotropy term, which is strong enough to overcome the shape anisotropy. At zero external magnetic field, the magnetization of the waveguide then points perpendicular to its long axis in a geometry, which is best-suited to spin-wave propagation. We show, by Brillouin light scattering microscopy, that without the presence of the external magnetic field, spin waves propagate over a distance 10xlarger in the corrugated waveguide than in the planar waveguide. We further analyze the influence of the modulation amplitude on the spin-wave propagation length and conclude that for moderate modulation amplitudes, the spin-wave decay length is not affected. For larger amplitudes, the decay length decreases linearly with increasing modulation. The presented approach opens many possibilities for the design of complex 2D magnonic circuits where the waveguides can be oriented in any direction and placed anywhere on the sample while still allowing spin-wave propagation with the same efficiency.en
dc.formattextcs
dc.format.extent1-5cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationApplied Physics Letters. 2021, vol. 118, issue 9, p. 1-5.en
dc.identifier.doi10.1063/5.0041138cs
dc.identifier.issn1077-3118cs
dc.identifier.other171712cs
dc.identifier.urihttp://hdl.handle.net/11012/201153
dc.language.isoencs
dc.publisherAIP Publishingcs
dc.relation.ispartofApplied Physics Letterscs
dc.relation.urihttps://aip.scitation.org/doi/10.1063/5.0041138cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1077-3118/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectAnisotropyen
dc.subjectBrillouin scatteringen
dc.subjectDegrees of freedom (mechanics)en
dc.subjectMagnetic fieldsen
dc.subjectModulationen
dc.subjectWave propagationen
dc.subjectWaveguidesen
dc.titleSpin wave propagation in corrugated waveguidesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-171712en
sync.item.dbtypeVAVen
sync.item.insts2021.08.30 23:53:59en
sync.item.modts2021.08.30 22:49:52en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Sdílená laboratoř RP1cs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Příprava a charakterizace nanostrukturcs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav fyzikálního inženýrstvícs
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Ústav materiálových věd a inženýrství
Příprava a charakterizace nanostruktur
Sdílená laboratoř RP1
Ústav fyzikálního inženýrství