Fig. 2: Temperature and field dependence of Hall conductivity of GdCu2.
From: Giant Hall effect in a highly conductive frustrated magnet GdCu2
a Magnetic field dependence of Hall conductivity at various temperatures. The square and triangle open symbols indicate the peak positions. b Contour plot of Hall conductivity on the temperature-field phase diagram. The phase boundaries shown by the closed circle symbols are determined by magnetization measurements (Fig. 1e and Supplementary Fig. 2). The square and triangle open symbols indicate the peak positions of σxy(H) in phase I and the FP region, respectively. c Scaling plot of the maximum Hall conductivity σxymax in the FP region versus the longitudinal conductivity σxx obtained at the same magnetic field. Blue squares show the data points at 2 K and 5 K obtained from the measurements up to 14 T (Fig. 1f) on sample #1. Red circles show the data points from 2.3 K to 12 K obtained from the measurements up to 24 T (a) on sample #2. The pink line shows the fitting of the scaling law \({\sigma }_{{xy}}\propto {{\sigma }_{{xx}}}^{n}\) (n = 1.78). For comparison, the conventional skew scattering of Fe films and the giant anomalous Hall conductivity of KV3Sb515 and MnGe films16 are also plotted.
