FMR line shape effect on spin pumping in bilayer structures
https://doi.org/10.26907/mrsej-19302
Abstract
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.
About the Authors
V. A. Atsarkin
V.A. Kotel'nikov Institute of Radio Engineering and Electronics of RAS
Russian Federation
Russian Federation
Mokhovaya 11, Moscow 125009
V. V. Demidov
V.A. Kotel'nikov Institute of Radio Engineering and Electronics of RAS
Russian Federation
Russian Federation
Mokhovaya 11, Moscow 125009
T. A. Shaikhulov
V.A. Kotel'nikov Institute of Radio Engineering and Electronics of RAS
Russian Federation
Russian Federation
Mokhovaya 11, Moscow 125009
G. A. Ovsyannikov
V.A. Kotel'nikov Institute of Radio Engineering and Electronics of RAS
Russian Federation
Russian Federation
Mokhovaya 11, Moscow 125009
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Review
For citations:
Atsarkin V.A., Demidov V.V., Shaikhulov T.A., Ovsyannikov G.A. FMR line shape effect on spin pumping in bilayer structures. Magnetic Resonance in Solids. 2019;21(3):19302 (6 pp.). https://doi.org/10.26907/mrsej-19302
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