Figure 4
From: Spin-orbit torque magnetometry by wide-field magneto-optical Kerr effect
Schematic illustrations of DL-SOT effective field measurements through (a) electrical and (b,c) optical approaches on a Ta(4)/CoFeB(1.4)/Hf(0.5)/MgO(2) Hall-cross device. The red dashed boxes in (b) and (c) represent the MOKE detection areas-of-interest, namely the Hall-cross region and the bar region, respectively. (d,e,f) \({H}_{z}^{{\rm{eff}}}\) as functions of I dc for H x = ±600 Oe under different measurement schemes.
