In situ Kerr and harmonic measurement in determining current-induced effective fields in MgO/CoFeB/Ta

• Main Authors: Wong, Qi Ying, Gan, Weiliang, Luo, Fanglin, Lim, Gerard Joseph, Ang, Calvin Ching Ian, Tan, Funan, Law, Wai Cheung, Lew, Wen Siang
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2021
• Subjects: Science::Physics; Spin Orbit Torque; Harmonic Measurement
• Online Access: https://hdl.handle.net/10356/148661
• Institution: Nanyang Technological University

A combination of the harmonic measurement and in situ Kerr imaging was used to experimentally determine the spin-orbit (SO) effective fields in a MgO/CoFeB/Ta structure. Here, we evaluate the SO effective fields through an analytical energy approach by transforming the anomalous Hall effect and plan...