Spatial mapping of spin pumping from magnetic insulator

Rieko Takemasa; Yuma Tateno; Kazuya Ando

doi:10.1063/1.4974823

Spatial mapping of spin pumping from magnetic insulator

Rieko Takemasa, Yuma Tateno, Kazuya Ando

Department of Applied Physics and Physico-Informatics

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

2 Citations (Scopus)

Abstract

We demonstrate the spatial mapping of the spin pumping from a magnetic insulator, yttrium iron garnet (YIG), using the inverse spin Hall effect. The inverse spin Hall effect in thin Pt wires placed on a YIG film enables local detection of the spin-current emission from the insulator, revealing spatially nonuniform spin pumping at various microwave excitation frequencies. We found that the spatial variation of the spin pumping is sensitive to the wavelength of the magnons responsible for the spin pumping as well as the thickness of the magnetic insulator. These findings provide an important information for studying spintronic phenomena in metal/insulator bilayers.

Original language	English
Article number	042404
Journal	Applied Physics Letters
Volume	110
Issue number	4
DOIs	https://doi.org/10.1063/1.4974823
Publication status	Published - 2017 Jan 23

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4974823

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title = "Spatial mapping of spin pumping from magnetic insulator",

abstract = "We demonstrate the spatial mapping of the spin pumping from a magnetic insulator, yttrium iron garnet (YIG), using the inverse spin Hall effect. The inverse spin Hall effect in thin Pt wires placed on a YIG film enables local detection of the spin-current emission from the insulator, revealing spatially nonuniform spin pumping at various microwave excitation frequencies. We found that the spatial variation of the spin pumping is sensitive to the wavelength of the magnons responsible for the spin pumping as well as the thickness of the magnetic insulator. These findings provide an important information for studying spintronic phenomena in metal/insulator bilayers.",

author = "Rieko Takemasa and Yuma Tateno and Kazuya Ando",

note = "Funding Information: This work was supported by the JSPS KAKENHI Grant Nos. 26220604, 26103004, 26600078, Spin-RNJ, the Mitsubishi Foundation, the Asahi Glass Foundation, the Mizuho Foundation for the Promotion of Sciences, and the Casio Science Promotion Foundation. Publisher Copyright: {\textcopyright} 2017 Author(s).",

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AU - Takemasa, Rieko

AU - Tateno, Yuma

AU - Ando, Kazuya

N1 - Funding Information: This work was supported by the JSPS KAKENHI Grant Nos. 26220604, 26103004, 26600078, Spin-RNJ, the Mitsubishi Foundation, the Asahi Glass Foundation, the Mizuho Foundation for the Promotion of Sciences, and the Casio Science Promotion Foundation. Publisher Copyright: © 2017 Author(s).

PY - 2017/1/23

Y1 - 2017/1/23

N2 - We demonstrate the spatial mapping of the spin pumping from a magnetic insulator, yttrium iron garnet (YIG), using the inverse spin Hall effect. The inverse spin Hall effect in thin Pt wires placed on a YIG film enables local detection of the spin-current emission from the insulator, revealing spatially nonuniform spin pumping at various microwave excitation frequencies. We found that the spatial variation of the spin pumping is sensitive to the wavelength of the magnons responsible for the spin pumping as well as the thickness of the magnetic insulator. These findings provide an important information for studying spintronic phenomena in metal/insulator bilayers.

AB - We demonstrate the spatial mapping of the spin pumping from a magnetic insulator, yttrium iron garnet (YIG), using the inverse spin Hall effect. The inverse spin Hall effect in thin Pt wires placed on a YIG film enables local detection of the spin-current emission from the insulator, revealing spatially nonuniform spin pumping at various microwave excitation frequencies. We found that the spatial variation of the spin pumping is sensitive to the wavelength of the magnons responsible for the spin pumping as well as the thickness of the magnetic insulator. These findings provide an important information for studying spintronic phenomena in metal/insulator bilayers.

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Spatial mapping of spin pumping from magnetic insulator

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