FMR line shape effect on spin pumping in bilayer structures

Pure spin current induced by ferromagnetic resonance (FMR) excitation in thin-film heterostructures consisting of ferromagnetic (FM) and normal metal (NM) layers is studied as a function of FMR line shape and width. Experiments were carried out with thin films of ferromagnetic La2/3Sr1/3MnO3 (LSMO)...

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Published in:Magnetic resonance in solids 2019, Vol.21 (3)
Main Authors: Atsarkin, V.A., Demidov, V.V., Shaikhulov, T.A., Ovsyannikov, G.A.
Format: Article
Language:English
Subjects:
Bilayers
Epitaxial growth
Ferromagnetic materials
Ferromagnetic resonance
Hall effect
Heterostructures
Line shape
Pumping
Shape effects
Spintronics
Substrates
Thin films
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Demidov, V.V.
Shaikhulov, T.A.
Ovsyannikov, G.A.
description Pure spin current induced by ferromagnetic resonance (FMR) excitation in thin-film heterostructures consisting of ferromagnetic (FM) and normal metal (NM) layers is studied as a function of FMR line shape and width. Experiments were carried out with thin films of ferromagnetic La2/3Sr1/3MnO3 (LSMO) grown epitaxially on NdGaO3 substrate and covered with Pt. The spin current injected into the NM layer was measured using the inverse spin Hall effect (ISHE) in the temperature range of 100-350 K. The samples under study revealed different width of the FMR line, which was attributed to inhomogeneous broadening with a specific Voigt shape of the ISHE signal. To take this effect into account, substantial corrections are proposed to the existing theory of spin pumping.
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subjects Bilayers
Epitaxial growth
Ferromagnetic materials
Ferromagnetic resonance
Hall effect
Heterostructures
Line shape
Pumping
Shape effects
Spintronics
Substrates
Thin films
title FMR line shape effect on spin pumping in bilayer structures
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