High Spin-Charge Conversion Efficiency of Co3Sn2S2 Promoted by Transition from Paramagnetic to Ferromagnetic Phase

Takeshi Seki; Yong Chang Lau; Junya Ikeda; Kohei Fujiwara; Akihiro Ozawa; Satoshi Iihama; Kentaro Nomura; Atsushi Tsukazaki

doi:10.1109/INTERMAGShortPapers58606.2023.10228604

High Spin-Charge Conversion Efficiency of Co₃Sn₂S₂ Promoted by Transition from Paramagnetic to Ferromagnetic Phase

Takeshi Seki, Yong Chang Lau, Junya Ikeda, Kohei Fujiwara, Akihiro Ozawa, Satoshi Iihama, Kentaro Nomura, Atsushi Tsukazaki

Condensed Matter Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Temperature (T) dependence of conversion from charge current to spin current was investigated for the Co3Sn₂S₂ (CSS) thin film by measuring the spin-torque ferromagnetic resonance (ST-FMR) for the sample with CSS / Cu / CoFeB. Above the ferromagnetic phase transition temperature (T_C), the sample exhibited the clear ST-FMR signal coming from the spin Hall effect in the paramagnetic CSS and the anisotropic magnetoresistance (AMR) of CoFeB. Below T_C, on the other hand, it is found that the ST-FMR signal involves the dc voltages not only through the AMR but also through the giant magnetoresistance. In addition, the spin Hall torque generated from the ferromagnetic CSS dominantly acts on the CoFeB magnetization. An increase in the spin-charge conversion efficiency is observed at T < T_C, indicating that the phase transition from the paramagnetic CSS to the ferromagnetic CSS promotes the spin-charge conversion.

Original language	English
Title of host publication	2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350338362
DOIs	https://doi.org/10.1109/INTERMAGShortPapers58606.2023.10228604
Publication status	Published - 2023
Event	2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Sendai, Japan Duration: May 15 2023 → May 19 2023

Publication series

Name	2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings

Conference

Conference	2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023
Country/Territory	Japan
City	Sendai
Period	5/15/23 → 5/19/23

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Mechanical Engineering
Electronic, Optical and Magnetic Materials
Instrumentation

Access to Document

10.1109/INTERMAGShortPapers58606.2023.10228604

Cite this

Seki, T., Lau, Y. C., Ikeda, J., Fujiwara, K., Ozawa, A., Iihama, S., Nomura, K., & Tsukazaki, A. (2023). High Spin-Charge Conversion Efficiency of Co₃Sn₂S₂ Promoted by Transition from Paramagnetic to Ferromagnetic Phase. In 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings (2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTERMAGShortPapers58606.2023.10228604

High Spin-Charge Conversion Efficiency of Co₃Sn₂S₂ Promoted by Transition from Paramagnetic to Ferromagnetic Phase. / Seki, Takeshi; Lau, Yong Chang; Ikeda, Junya et al.
2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. (2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Seki, T, Lau, YC, Ikeda, J, Fujiwara, K, Ozawa, A, Iihama, S, Nomura, K & Tsukazaki, A 2023, High Spin-Charge Conversion Efficiency of Co₃Sn₂S₂ Promoted by Transition from Paramagnetic to Ferromagnetic Phase. in 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings. 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings, Institute of Electrical and Electronics Engineers Inc., 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023, Sendai, Japan, 5/15/23. https://doi.org/10.1109/INTERMAGShortPapers58606.2023.10228604

Seki T, Lau YC, Ikeda J, Fujiwara K, Ozawa A, Iihama S et al. High Spin-Charge Conversion Efficiency of Co₃Sn₂S₂ Promoted by Transition from Paramagnetic to Ferromagnetic Phase. In 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2023. (2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings). doi: 10.1109/INTERMAGShortPapers58606.2023.10228604

Seki, Takeshi ; Lau, Yong Chang ; Ikeda, Junya et al. / High Spin-Charge Conversion Efficiency of Co₃Sn₂S₂ Promoted by Transition from Paramagnetic to Ferromagnetic Phase. 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. (2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings).

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title = "High Spin-Charge Conversion Efficiency of Co3Sn2S2 Promoted by Transition from Paramagnetic to Ferromagnetic Phase",

abstract = "Temperature (T) dependence of conversion from charge current to spin current was investigated for the Co3Sn2S2 (CSS) thin film by measuring the spin-torque ferromagnetic resonance (ST-FMR) for the sample with CSS / Cu / CoFeB. Above the ferromagnetic phase transition temperature (TC), the sample exhibited the clear ST-FMR signal coming from the spin Hall effect in the paramagnetic CSS and the anisotropic magnetoresistance (AMR) of CoFeB. Below TC, on the other hand, it is found that the ST-FMR signal involves the dc voltages not only through the AMR but also through the giant magnetoresistance. In addition, the spin Hall torque generated from the ferromagnetic CSS dominantly acts on the CoFeB magnetization. An increase in the spin-charge conversion efficiency is observed at T < TC, indicating that the phase transition from the paramagnetic CSS to the ferromagnetic CSS promotes the spin-charge conversion.",

author = "Takeshi Seki and Lau, {Yong Chang} and Junya Ikeda and Kohei Fujiwara and Akihiro Ozawa and Satoshi Iihama and Kentaro Nomura and Atsushi Tsukazaki",

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AU - Seki, Takeshi

AU - Lau, Yong Chang

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AU - Fujiwara, Kohei

AU - Ozawa, Akihiro

AU - Iihama, Satoshi

AU - Nomura, Kentaro

AU - Tsukazaki, Atsushi

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N2 - Temperature (T) dependence of conversion from charge current to spin current was investigated for the Co3Sn2S2 (CSS) thin film by measuring the spin-torque ferromagnetic resonance (ST-FMR) for the sample with CSS / Cu / CoFeB. Above the ferromagnetic phase transition temperature (TC), the sample exhibited the clear ST-FMR signal coming from the spin Hall effect in the paramagnetic CSS and the anisotropic magnetoresistance (AMR) of CoFeB. Below TC, on the other hand, it is found that the ST-FMR signal involves the dc voltages not only through the AMR but also through the giant magnetoresistance. In addition, the spin Hall torque generated from the ferromagnetic CSS dominantly acts on the CoFeB magnetization. An increase in the spin-charge conversion efficiency is observed at T < TC, indicating that the phase transition from the paramagnetic CSS to the ferromagnetic CSS promotes the spin-charge conversion.

AB - Temperature (T) dependence of conversion from charge current to spin current was investigated for the Co3Sn2S2 (CSS) thin film by measuring the spin-torque ferromagnetic resonance (ST-FMR) for the sample with CSS / Cu / CoFeB. Above the ferromagnetic phase transition temperature (TC), the sample exhibited the clear ST-FMR signal coming from the spin Hall effect in the paramagnetic CSS and the anisotropic magnetoresistance (AMR) of CoFeB. Below TC, on the other hand, it is found that the ST-FMR signal involves the dc voltages not only through the AMR but also through the giant magnetoresistance. In addition, the spin Hall torque generated from the ferromagnetic CSS dominantly acts on the CoFeB magnetization. An increase in the spin-charge conversion efficiency is observed at T < TC, indicating that the phase transition from the paramagnetic CSS to the ferromagnetic CSS promotes the spin-charge conversion.

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