Current-induced modulation of coercive field in the ferromagnetic oxide SrRuO

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

https://doi.org/10.1109/TMAG.2019.2894897

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