3D MOKE spin-orbit torque magnetometer

2017/07/25 by Halise Celik, Celik, Halise, Harsha Kannan +17
Engineering · Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Magnetic properties of thin films #Magneto-Optical Properties and Applications #Optics (physics.optics)

paper · pdf · doi:10.48550/arxiv.1707.08565

openalex publication_date 2017/07/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We demonstrate simultaneous detection of current driven antidamping-like and field-like spin-orbit torques in heavy metal/ferromagnetic metal bilayers by measuring all three magnetization components m_(x,) m_y, and m_z using the vector magneto-optic Kerr effect. We have also implemented a self-calibration method to accurately determine the effective fields of spin-orbit torques. With this technique, we investigate the magnitude and direction of spin-orbit torques in a series of platinum/permalloy samples. The values found are in excellent agreement with results obtained via quadratic magneto-optic Kerr effect, planar Hall effect, and spin transfer ferromagnetic resonance measurements.

Related

• Magneto-optical detection of spin-orbit torque vector with first-order Kerr effects
• Determination of spin-orbit torques by thickness-dependent spin-orbit torque FMR measurement
• Direct determination of Spin-Orbit torque by using dc current-voltage characteristics
• Investigating spin and orbital effects via spin–torque ferromagnetic resonance
• Influence of nonuniform magnetization reorientation on spin-orbit torque measurements