Spin injection efficiency through the pumping in epitaxial Co2MnSi/Pt thin film

Y. Sasaki; S. Sugimoto; Y. K. Takahashi; S. Kasai

doi:10.1063/5.0008393

Spin injection efficiency through the pumping in epitaxial Co₂MnSi/Pt thin film

Y. Sasaki, S. Sugimoto, Y. K. Takahashi, S. Kasai^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The spin injection efficiencies in epitaxial Co2MnSi (CMS)/Pt thin films were investigated in spin pumping configuration. The inverse spin Hall (effect) voltage significantly depends on the post-annealing temperature Ta of CMS, which shows one order larger values than those of Fe and CoFe at Ta = 400 °C. The effective spin mixing conductance derived by the analytical model reaches 6.5 × 1019 m-2. Our findings suggest that the Co-based Heusler alloys could be promising material candidates as the spin injection source with spin pumping.

Original language	English
Article number	085311
Journal	AIP Advances
Volume	10
Issue number	8
DOIs	https://doi.org/10.1063/5.0008393
Publication status	Published - 2020 Aug 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Spin injection efficiency through the pumping in epitaxial Co2MnSi/Pt thin film",

abstract = "The spin injection efficiencies in epitaxial Co2MnSi (CMS)/Pt thin films were investigated in spin pumping configuration. The inverse spin Hall (effect) voltage significantly depends on the post-annealing temperature Ta of CMS, which shows one order larger values than those of Fe and CoFe at Ta = 400 °C. The effective spin mixing conductance derived by the analytical model reaches 6.5 × 1019 m-2. Our findings suggest that the Co-based Heusler alloys could be promising material candidates as the spin injection source with spin pumping.",

author = "Y. Sasaki and S. Sugimoto and Takahashi, {Y. K.} and S. Kasai",

note = "Funding Information: This work was partially supported by the Japan Society for the Promotion Science, KAKENHI Grant No. 17K18892, and JST, PRESTO Grant No. JPMJPR18L3, Japan. We would like to thank Y. Miura for the various discussions. Publisher Copyright: {\textcopyright} 2020 Author(s).",

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doi = "10.1063/5.0008393",

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T1 - Spin injection efficiency through the pumping in epitaxial Co2MnSi/Pt thin film

AU - Sasaki, Y.

AU - Sugimoto, S.

AU - Takahashi, Y. K.

AU - Kasai, S.

N1 - Funding Information: This work was partially supported by the Japan Society for the Promotion Science, KAKENHI Grant No. 17K18892, and JST, PRESTO Grant No. JPMJPR18L3, Japan. We would like to thank Y. Miura for the various discussions. Publisher Copyright: © 2020 Author(s).

PY - 2020/8/1

Y1 - 2020/8/1

N2 - The spin injection efficiencies in epitaxial Co2MnSi (CMS)/Pt thin films were investigated in spin pumping configuration. The inverse spin Hall (effect) voltage significantly depends on the post-annealing temperature Ta of CMS, which shows one order larger values than those of Fe and CoFe at Ta = 400 °C. The effective spin mixing conductance derived by the analytical model reaches 6.5 × 1019 m-2. Our findings suggest that the Co-based Heusler alloys could be promising material candidates as the spin injection source with spin pumping.

AB - The spin injection efficiencies in epitaxial Co2MnSi (CMS)/Pt thin films were investigated in spin pumping configuration. The inverse spin Hall (effect) voltage significantly depends on the post-annealing temperature Ta of CMS, which shows one order larger values than those of Fe and CoFe at Ta = 400 °C. The effective spin mixing conductance derived by the analytical model reaches 6.5 × 1019 m-2. Our findings suggest that the Co-based Heusler alloys could be promising material candidates as the spin injection source with spin pumping.

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Spin injection efficiency through the pumping in epitaxial Co₂MnSi/Pt thin film

Abstract

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