2017/08/31 by Frank Freimuth, Stefan Blügel, Yuriy Mokrousov
Physics and Astronomy · #Asymmetry #Condensed matter physics #Ferromagnetism #Gyromagnetic ratio #Magnetic field #Magnetic moment #Magnetic properties of thin films #Magnetization #Physics #Physics of Superconductivity and Magnetism #Point reflection #Quantum and electron transport phenomena #Quantum mechanics #Rashba effect #Scattering #Spin (aerodynamics) #Spintronics #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.96.104418
published as Phys. Rev. B 96, 104418 (2017)
arxiv created 2017/08/31 · openalex publication_date 2017/09/14 · arxiv updated 2017/09/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate Gilbert damping, spectroscopic gyromagnetic ratio, and current-induced torques in the one-dimensional Rashba model with an additional noncollinear magnetic exchange field. We find that the Gilbert damping differs between left-handed and right-handed N'eel-type magnetic domain walls due to the combination of spatial inversion asymmetry and spin-orbit interaction (SOI), consistent with recent experimental observations of chiral damping. Additionally, we find that also the spectroscopic g factor differs between left-handed and right-handed N'eel-type domain walls, which we call chiral gyromagnetism. We also investigate the gyromagnetic ratio in the Rashba model with collinear magnetization, where we find that scattering corrections to the g factor vanish for zero SOI, become important for finite spin-orbit coupling, and tend to stabilize the gyromagnetic ratio close to its nonrelativistic value.