Open AccessEffect of nanostructure layout on spin pumping phenomena in antiferromagnet/nonmagnetic metal/ferromagnet multilayered stacks
Author(s) -
A. F. Kravets,
Olena Gomonay,
D. M. Polishchuk,
Yu. O. Tykhonenko-Polishchuk,
T. I. Polek,
A. I. Tovstolytkin,
V. Korenivski
Publication year - 2017
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4975694
Subject(s) - condensed matter physics , antiferromagnetism , ferromagnetism , spin pumping , permalloy , materials science , ferromagnetic resonance , laser linewidth , spintronics , spins , magnetization dynamics , electron , spin polarization , magnetic field , spin hall effect , magnetization , physics , optics , laser , quantum mechanics
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
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