Spin pumping efficiency from half metallic Co2MnSi

We present spin pumping using a Heusler alloy Co2MnSi/Pt bilayer film. A spin current is produced by a ferromagnetic resonance (FMR) technique. The pure spin current injected into the Pt layer from the Co2MnSi layer is detected by the inverse spin-Hall effect (ISHE), which converts the spin current...

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Bibliographic Details
Published in:Journal of applied physics 2011-04, Vol.109 (7)
Main Authors: Chudo, H., Ando, K., Saito, K., Okayasu, S., Haruki, R., Sakuraba, Y., Yasuoka, H., Takanashi, K., Saitoh, E.
Format: Article
Language:English
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Summary:We present spin pumping using a Heusler alloy Co2MnSi/Pt bilayer film. A spin current is produced by a ferromagnetic resonance (FMR) technique. The pure spin current injected into the Pt layer from the Co2MnSi layer is detected by the inverse spin-Hall effect (ISHE), which converts the spin current into an electric current. We estimated a damping constant of the Co2MnSi/Pt bilayer film from an angular dependence of FMR spectra. Using the damping constant efficiency of spin pumping from the Co2MnSi layer is evaluated. We found that a mixing conductance at the Co2MnSi/Pt interface is comparable to that at a permalloy/Pt interface.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3556433