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Magnon radiation by moving Abrikosov vortices in ferromagnetic superconductors and superconductor-ferromagnet multilayers

hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
hal.structure.identifierInstitute for Physics of Microstructures of the RAS
dc.contributor.authorBESPALOV, Anton A.
hal.structure.identifierInstitute for Physics of Microstructures of the RAS
hal.structure.identifierNizhny Novgorod State University
dc.contributor.authorMEL'NIKOV, A. S.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBUZDIN, Alexandre I.
dc.date.created2013-11-29
dc.date.issued2014-02-26
dc.identifier.issn1098-0121
dc.description.abstractEnIn systems combining type-II superconductivity and magnetism the nonstationary magnetic field of moving Abrikosov vortices may excite spin waves, or magnons. This effect leads to the appearance of an additional damping force acting on the vortices. By solving the London and Landau-Lifshitz-Gilbert equations we calculate the magnetic-moment-induced force acting on vortices in ferromagnetic superconductors and superconductor-ferromagnet superlattices. If the vortices are driven by a dc force, magnon generation due to the Cherenkov resonance starts as the vortex velocity exceeds some threshold value. For an ideal vortex lattice this leads to an anisotropic contribution to the resistivity and to the appearance of resonance peaks on the current-voltage characteristics. For a disordered vortex array the current will exhibit a steplike increase at some critical voltage. If the vortices are driven by an ac force with a frequency ω, the interaction with magnetic moments will lead to a frequency-dependent magnetic contribution ηM to the vortex viscosity. If ω is below the ferromagnetic resonance frequency ωF, vortices acquire additional inertia. For ω >ωF dissipation is enhanced due to magnon generation. The viscosity ηM can be extracted from the surface impedance of the ferromagnetic superconductor. Estimates of the magnetic force acting on vortices for the U-based ferromagnetic superconductors and cuprate-manganite superlattices are given.
dc.description.sponsorshipDes nanosondes ultra-sensibles pour explorer les distributions de charges électriques dans les supraconducteurs - ANR-12-BS10-0014
dc.language.isoen
dc.publisherAmerican Physical Society
dc.subject.enSpin waves
dc.subject.enVortex phases
dc.subject.enSurface impedance
dc.title.enMagnon radiation by moving Abrikosov vortices in ferromagnetic superconductors and superconductor-ferromagnet multilayers
dc.typeArticle de revue
dc.identifier.doi10.1103/PHYSREVB.89.054516
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Supraconductivité [cond-mat.supr-con]
dc.identifier.arxiv1311.7620
dc.description.sponsorshipEuropeNew Century of Superconductivity: Ideas, Materials, Technologies
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page54516 (1-16)
bordeaux.volume89
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-00974978
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00974978v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20B:%20Condensed%20Matter%20and%20Materials%20Physics%20(1998-2015)&rft.date=2014-02-26&rft.volume=89&rft.issue=5&rft.spage=54516%20(1-16)&rft.epage=54516%20(1-16)&rft.eissn=1098-0121&rft.issn=1098-0121&rft.au=BESPALOV,%20Anton%20A.&MEL'NIKOV,%20A.%20S.&BUZDIN,%20Alexandre%20I.&rft.genre=article


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