Impact of current-induced magnons on spin-orbit-torque analysis
Abstract
The second-harmonic Hall technique is a widely used, sensitive method for studying the spin-orbit torques generated by charge current. It exploits the dependence of the Hall resistance on the magnetization direction, although thermal phenomena also contribute. Historically, deviations from the expected magnetic field dependence have usually been ignored. On the basis of our studies on permalloy/platinum bilayers, we show that a counterpart to the magnon-related spin-flip unidirectional magnetoresistance—known to appear in the second-harmonic longitudinal resistance—appears in the Hall data, and that describing the results in a wide field range with these contributions is essential to accurately estimate the torques.
Fields of Study & Subjects
Experimental and Theoretical Physics Studies
Atomic and Subatomic Physics Research
Quantum and Classical Electrodynamics
Publication details
- Journal / source
- Physical Review Applied
- Publisher
- American Physical Society (APS)
- Volume
- 25
- Issue
- 6
- Publication date
- 14 April 2026
- Language
- EN