Spin pumping and the inverse spin hall effect in single crystalline Fe/Pt heterostructure

Y. Huo; F. L. Zeng; C. Zhou; Y. Z. Wu

doi:10.1063/1.4976957

AIP Advances (May 2017)

Spin pumping and the inverse spin hall effect in single crystalline Fe/Pt heterostructure

Y. Huo,
F. L. Zeng,
C. Zhou,
Y. Z. Wu

Affiliations

Y. Huo: Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
F. L. Zeng: Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
C. Zhou: Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
Y. Z. Wu: Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China

DOI: https://doi.org/10.1063/1.4976957
Journal volume & issue: Vol. 7, no. 5
pp. 056024 – 056024-6

Abstract

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Spin pumping effect in single crystalline Fe/Pt bilayer has been systematically studied by the measurements of the microwave absorption spectrum and the inverse spin hall voltage detection. The gilbert damping constant of Fe first increases with Pt thickness and then saturates at tPt>1.5 nm. The spin diffusion length can be determined as 1.5±0.4 nm, and the spin mixing conductance is (3.4±0.4)×1019 m-2. The inverse spin hall voltage is quantitatively separated from the spin rectification effect through the measurement of the magnetization angular dependence, and the estimated spin hall angle of Pt is 0.048±0.015, in consistent with the values determined in polycrystalline Pt films.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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