Significant suppression of galvanomagnetic signal under dynamical spin injection in CoFeB/Pt bilayer

Sora Obinata; Kohei Ohnishi; Takashi Kimura

doi:10.1063/5.0046601

Significant suppression of galvanomagnetic signal under dynamical spin injection in CoFeB/Pt bilayer

Sora Obinata, Kohei Ohnishi, Takashi Kimura

Condensed Matter Physics

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

4 Citations (Scopus)

Abstract

An effective detection structure for a dynamical spin injection in a ferromagnetic/nonmagnetic metal bilayer has been developed. We demonstrate a clear detection of a highly symmetric signal, indicating a significant suppression of spurious signals due to the galvanomagnetic effects from the ferromagnetic layer. The angular dependence of the signal amplitude assures that the observed signal is caused by the inverse spin Hall effect due to the dynamical spin injection. We also find the importance of the eddy current that induces spin-rectified signals from a ferromagnetic layer.

Original language	English
Article number	152401
Journal	Applied Physics Letters
Volume	118
Issue number	15
DOIs	https://doi.org/10.1063/5.0046601
Publication status	Published - Apr 12 2021

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/5.0046601

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title = "Significant suppression of galvanomagnetic signal under dynamical spin injection in CoFeB/Pt bilayer",

abstract = "An effective detection structure for a dynamical spin injection in a ferromagnetic/nonmagnetic metal bilayer has been developed. We demonstrate a clear detection of a highly symmetric signal, indicating a significant suppression of spurious signals due to the galvanomagnetic effects from the ferromagnetic layer. The angular dependence of the signal amplitude assures that the observed signal is caused by the inverse spin Hall effect due to the dynamical spin injection. We also find the importance of the eddy current that induces spin-rectified signals from a ferromagnetic layer.",

author = "Sora Obinata and Kohei Ohnishi and Takashi Kimura",

note = "Funding Information: This work was partially supported by the Grant-in-Aid for Scientific Research (A)(18H03866) and JST CREST (No. JPMJCR18J1). Publisher Copyright: {\textcopyright} 2021 Author(s).",

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AU - Obinata, Sora

AU - Ohnishi, Kohei

AU - Kimura, Takashi

PY - 2021/4/12

Y1 - 2021/4/12

N2 - An effective detection structure for a dynamical spin injection in a ferromagnetic/nonmagnetic metal bilayer has been developed. We demonstrate a clear detection of a highly symmetric signal, indicating a significant suppression of spurious signals due to the galvanomagnetic effects from the ferromagnetic layer. The angular dependence of the signal amplitude assures that the observed signal is caused by the inverse spin Hall effect due to the dynamical spin injection. We also find the importance of the eddy current that induces spin-rectified signals from a ferromagnetic layer.

AB - An effective detection structure for a dynamical spin injection in a ferromagnetic/nonmagnetic metal bilayer has been developed. We demonstrate a clear detection of a highly symmetric signal, indicating a significant suppression of spurious signals due to the galvanomagnetic effects from the ferromagnetic layer. The angular dependence of the signal amplitude assures that the observed signal is caused by the inverse spin Hall effect due to the dynamical spin injection. We also find the importance of the eddy current that induces spin-rectified signals from a ferromagnetic layer.

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Significant suppression of galvanomagnetic signal under dynamical spin injection in CoFeB/Pt bilayer

Abstract

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