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論文

Current-induced modulation of coercive field in the ferromagnetic oxide SrRuO$$_{3}$$

山ノ内 道彦*; 小山田 達郎*; 佐藤 晃一*; 太田 裕道*; 家田 淳一

IEEE Transactions on Magnetics, 55(7), p.1400604_1 - 1400604_4, 2019/07

 被引用回数:4 パーセンタイル:27.86(Engineering, Electrical & Electronic)

We investigated the coercive field $$H_{c}$$ for Domain Wall (DW) motion as a function of the current $$I$$ in the ferromagnetic oxide SrRuO$$_{3}$$, a model system with narrow DWs for fabricating high-density spintronics devices. The DW is moved by $$I$$ in the direction of the current, and $$H_{c}$$ is modulated linearly in $$I$$. This linear relationship is consistent with an effective magnetic field $$H_{eff}$$ driving the DW. The direction of DW motion and the magnitude of $$H_{eff}$$ are well described by a model based on the field-like torque arising from the spin relaxation of conduction electrons in the DW.

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