Fig. 5: Antiferromagnetic resonances.
From: Néel spin-orbit torque in antiferromagnetic quantum spin and anomalous Hall insulators
Time evolution of the Néel order n(t) at the resonance of the left-handed mode (with f = 51.9 GHz set by a bias field H0 = 1.5 T) for a hrf-driven configuration, and b Erf-driven configuration. c, d are the corresponding amplitude (red, left axis) and phase (blue, right axis) of the dynamical susceptibility \({\tilde{\chi }}_{\perp }^{n}\) as a function of driving frequency f, where the low-frequency mode is left-handed (inset). Parameters: HJ = 35 T, H∥ = 0.16 T, α0 = 0.005, and Erf = 0.5V/μm (corresponding to hrf = 16.5 Gs).
