Fig. 3: Magnetic-field dependence and fitted results.

a, b φ dependences of \({\rho }_{zz}^{\omega }\) (a) and \({\rho }_{zz}^{2\omega }\) (b) for SrMnBi2 at 1.5 K for Iz=200 μA for various magnetic fields. The solid curves are the fitted results of the experimental data on the basis of the empirical equation (see the main text). c, d Magnetic-field (B) dependence of the fitted parameters. σ2D (c) and r (c) represent the parameters of AMR, determined by fitting \({\rho }_{zz}^{\omega }\) [Eq. (1)]. ε2D (d) and εr (d) represent the current-induced variations of σ2D and r, respectively, determined by fitting \({\rho }_{zz}^{2\omega }\) [Eq. (5)]. The error bars indicate the uncertainties arising from the fitting.