An accurate method, with detailed analytical equations, is developed to extract the spin–orbit (SO) effective fields through analysis of the results of harmonic Hall voltage measurements. Both the z component of the applied magnetic field (its directions, together with the axes and the Hall bars, are shown in the left figures) and the second-order perpendicular magnetic anisotropy are taken into account. The contour plots (right figures) showing the deviation (in %) from input values of the damping-like (ΔHDL) and field-like (ΔHFL) SO effective fields clearly demonstrate a significant improvement in the accuracy of the results obtained from the new refined method.
- Seok Jin Yun
- Eun-Sang Park
- Sang Ho Lim
