Show simple item record

dc.contributor.authorGladii, O.
dc.contributor.authorSeeger, R. L.
dc.contributor.authorFrangou, L.
dc.contributor.authorForestier, G.
dc.contributor.authorEbels, U.
dc.contributor.authorAuffret, S.
dc.contributor.authorBaltz, V.
dc.date.accessioned2019-12-29T12:27:02Z
dc.date.available2019-12-29T12:27:02Z
dc.date.issued2019-07-18
dc.identifier.citationAppl. Phys. Lett. 115, 032403 (2019)
dc.identifier.doi10.1063/1.5093150
dc.identifier.urihttp://hdl.handle.net/10754/660852
dc.description.abstractIn the field of spintronics, ferromagnetic/non-magnetic metallic multilayers are core building blocks for emerging technologies. Resonance experiments using stripline transducers are commonly used to characterize and engineer these stacks for applications. Up to now in these experiments, the influence of eddy currents on the excitation of the dynamics of ferromagnetic magnetization below the skin-depth limit was most often neglected. Here, using a coplanar stripline transducer, we experimentally investigated the broadband ferromagnetic resonance response of NiFe/Cu bilayers a few nanometers thick in the sub-skin-depth regime. Asymmetry in the absorption spectrum gradually built up as the excitation frequency and Cu-layer thickness increased. Most significantly, the sign of the asymmetry depended on the stacking order. Experimental data were consistent with a quantitative analysis considering eddy currents generated in the Cu layers and the subsequent phaseshift of the feedback magnetic field generated by the eddy currents. These results extend our understanding of the impact of eddy currents below the microwave magnetic skin-depth and explain the lineshape asymmetry and phase lags reported in stripline experiments.
dc.description.sponsorshipWe acknowledge financial support from the French national research agency (ANR) (Grant No. ANR-15-CE24-0015-01) and KAUST (Grant No. OSR-2015-CRG4-2626). We also thank M. Gallagher-Gambarelli for the critical reading of the manuscript.
dc.publisherAIP Publishing
dc.relation.urlhttps://arxiv.org/pdf/1902.06501
dc.relation.urlhttp://arxiv.org/pdf/1902.06501
dc.rightsArchived with thanks to arXiv
dc.titleStacking order-dependent sign-change of microwave phase due to eddy currents in nanometer-scale NiFe/Cu heterostructures
dc.typePreprint
dc.eprint.versionPre-print
dc.contributor.institutionUniv. Grenoble Alpes, CNRS, CEA, Grenoble INP, IRIG-SPINTEC, F-38000 Grenoble, France
dc.identifier.arxivid1902.06501
kaust.grant.numberGrant No. OSR-2015-CRG4-2626
refterms.dateFOA2019-12-29T12:27:59Z
kaust.acknowledged.supportUnitOSR
dc.date.published-online2019-07-18
dc.date.published-print2019-07-15
dc.date.posted2019-02-18


Files in this item

Thumbnail
Name:
Preprintfile1.pdf
Size:
893.8Kb
Format:
PDF
Description:
Pre-print

This item appears in the following Collection(s)

Show simple item record