6533b861fe1ef96bd12c4f4b
RESEARCH PRODUCT
Effect of nanostructure layout on spin pumping phenomena in antiferromagnet/nonmagnetic metal/ferromagnet multilayered stacks
Yu. O. Tykhonenko-polishchukYu. O. Tykhonenko-polishchukT. I. PolekVladislav KorenivskiD. M. PolishchukD. M. PolishchukA. F. KravetsA. F. KravetsOlena GomonayOlena GomonayAlexandr Tovstolytkinsubject
010302 applied physicsPermalloySpin pumpingMaterials scienceCondensed matter physicsSpintronicsGeneral Physics and Astronomy01 natural sciencesFerromagnetic resonancelcsh:QC1-999Magnetic fieldCondensed Matter::Materials ScienceLaser linewidthFerromagnetism0103 physical sciencesAntiferromagnetismCondensed Matter::Strongly Correlated Electrons010306 general physicslcsh:Physicsdescription
In this work we focus on magnetic relaxation in Mn80Ir20(12 nm)/Cu(6 nm)/Py(dF) antiferromagnet/Cu/ferromagnet (AFM/Cu/FM) multilayers with different thickness of the ferromagnetic permalloy layer. An effective FM-AFM interaction mediated via the conduction electrons in the nonmagnetic Cu spacer – the spin-pumping effect – is detected as an increase in the linewidth of the ferromagnetic resonance (FMR) spectra and a shift of the resonant magnetic field. We further find experimentally that the spin-pumping-induced contribution to the linewidth is inversely proportional to the thickness of the Py layer. We show that this thickness dependence likely originates from the dissipative dynamics of the free and localized spins in the AFM layer. The results obtained could be used for tailoring the dissipative properties of spintronic devices incorporating antiferromagnetic layers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-05-01 | AIP Advances |