Observation of topological Hall torque exerted on a domain wall in the ferromagnetic oxide SrRuO3

Yamanouchi, Michihiko; Araki, Yasufumi; Sakai, Takaki et al.

Science advances, 2022, 8(15), eabl6192

Permalink : https://hdl.handle.net/2115/85550

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アクセス権
metadata only access
URI
https://hdl.handle.net/2115/85550
タイトル
Observation of topological Hall torque exerted on a domain wall in the ferromagnetic oxide SrRuO3
著者
Yamanouchi, Michihiko ; Araki, Yasufumi ; Sakai, Takaki ; Uemura, Tetsuya ; Ohta, Hiromichi ; Ieda, Jun'ichi
e-Rad_Researcher
40590899
著者名
Yamanouchi, Michihiko
e-Rad_Researcher
10757131
著者名
Araki, Yasufumi
著者名
Sakai, Takaki
e-Rad_Researcher
20344476
著者名
Uemura, Tetsuya
e-Rad_Researcher
80372530
著者名
Ohta, Hiromichi
e-Rad_Researcher
20463797
著者名
Ieda, Jun'ichi
言語
英語
発行日
2022-04-15
出版者
The American Association for the Advancement of Science（AAAS）
収録物名
Science advances
巻(号)
8(15)
ページ
eabl6192
抄録
In a ferromagnetic Weyl metal SrRuO3, a large effective magnetic field H-eff exerted on a magnetic domain wall (DW) by current has been reported. We show that the ratio of H-eff to current density exhibits nonmonotonic temperature dependence and surpasses those of conventional spin-transfer torques and spin-orbit torques. This enhancement is described well by topological Hall torque (THT), which is exerted on a DW by Weyl electrons emerging around Weyl points when an electric field is applied across the DW. The ratio of the H-eff arising from the THT to current density is over one order of magnitude higher than that originating from spin-transfer torques and spin-orbit torques reported in metallic systems, showing that the THT may provide a better way for energy-efficient manipulation of magnetization in spintronics devices.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
PISSN
2375-2548
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1126/sciadv.abl6192