Fig. 3. Evaluation of the z component of the spin–orbit effective field on the magnetic Néel DWs.

a The normalized out-of-plane Hall curves measured under a fixed in-plane magnetic field of H_x = +600 Oe and opposite d.c. currents of $\pm 4\mathrm{mA}$. b The $H_{\mathrm{shift}}^{\mathrm{z}}$ as a function of $I_{\mathrm{DC}}$ under different bias fields. The solid lines are linear fittings to the data. c, d The switching fields $H_{\mathrm{SW}}$ for down-to-up (DN-UP, red squares) and up-to-down (UP-DN, blue circles) magnetization reversals as a function of $I_{\mathrm{DC}}$ with H_x = +600 Oe and H_x = −600 Oe, respectively.