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dc.contributor.authorDOBROVOLSKIY, O.V.
dc.contributor.authorWANG, Q.
dc.contributor.authorVODOLAZOV, D.Yu.
dc.contributor.authorBUDINSKA, B.
dc.contributor.authorSACHSER, R.
dc.contributor.authorCHUMAK, A.V.
dc.contributor.authorHUTH, M.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBUZDIN, A.I.
dc.description.abstractEnDespite theoretical predictions for a Cherenkov-type radiation of spin waves (magnons) by various propagating magnetic perturbations, fast-enough moving magnetic field stimuli have not been available so far. Here, we experimentally realize the Cherenkov radiation of spin waves in a Co-Fe magnonic conduit by fast-moving (>1 km/s) magnetic flux quanta (Abrikosov vortices) in an adjacent Nb-C superconducting strip. The radiation is evidenced by the microwave detection of spin waves propagating a distance of 2 micrometers from the superconductor and it is accompanied by a magnon Shapiro step in its current-voltage curve. The spin-wave excitation is unidirectional and monochromatic, with sub-40 nm wavelengths determined by the period of the vortex lattice. The phase-locking of the vortex lattice with the excited spin wave limits the vortex velocity and reduces the dissipation in the superconductor.
dc.language.isoen
dc.title.enCherenkov radiation of spin waves by ultra-fast moving magnetic flux quanta
dc.typeDocument de travail - Pré-publication
dc.subject.halPhysique [physics]/Physique [physics]/Physique Générale [physics.gen-ph]
dc.identifier.arxiv2103.10156
hal.identifierhal-03191158
hal.version1
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03191158v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=DOBROVOLSKIY,%20O.V.&WANG,%20Q.&VODOLAZOV,%20D.Yu.&BUDINSKA,%20B.&SACHSER,%20R.&rft.genre=preprint


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