Fig. 2: Unconventional charge–spin conversion in TaIrTe4.
From: Large out-of-plane spin–orbit torque in topological Weyl semimetal TaIrTe4
a Schematic of the TaIrTe4/Py heterostructure with SOT components, where Irf and Idc are the in-plane applied radio frequency and direct current, respectively. Ha applied magnetic field, M magnetization of the sample, and ϕ is the in-plane angle between applied current and magnetic field. \({\tau }_{\parallel }\) and \({\tau }_{{{{{{\rm{ \perp }}}}}}}\) are the in-plane and out-of-plane component of the damping-like torque. b Anisotropic magnetoresistance curve with an applied magnetic field of 100 mT and dc current of 0.6 mA. c Frequency-dependent STFMR spectra with in-plane magnetic field angle ϕ = 40° for a frequency range of 4-14 GHz. d, STFMR spectra with positive (ϕ = 40°) and negative (ϕ = 220°) applied magnetic field in the frequency range of 5–7 GHz. e, f The experimental STFMR curves (Exp. Vmix), fitted curves using Eq. (1) (fitted Vmix), symmetric (SFS) and antisymmetric (AFA) contributions in the Vmix (fitted) at 5 GHz for devices fabricated along a and b-axis respectively. In c, e, and f solid symbols represent the experimental STFMR data and solid lines are fit to the obtained data using Eq. (1). For b–e measurements are performed in the TaIrTe4(133 nm)/Py(6 nm) device fabricated along a-axis, while for f measurements are performed in TaIrTe4(30 nm)/Py(6 nm) device fabricated along b-axis.
