Fig. 2: Anomalous Hall effect and its comparison to weak ferromagnetism.

a, b The field dependence of Hall resistivity \(\rho _{{{{\mathrm{xy}}}}}\) and magnetization along the c-axis at several temperatures. c Temperature dependence of H_c1 (circles) and H_c2 (triangles) determined from the \(\rho _{{{{\mathrm{xy}}}}}({{{\mathbf{H}}}})\) (hollow symbols) and \(M_{{{\mathrm{z}}}}({{{\mathbf{H}}}})\) (filled symbols) curves. d, e Temperature-dependent zero-field Hall conductivity (\(\sigma _{{{{\mathrm{xy}}}}}({{{\mathbf{H}}}} = 0)\)) and zero-field magnetization along the c-axis \((M_{{{\mathrm{z}}}}(H = 0))\), measured after a field cooling process (see “Methods”). Inset shows the critical behavior of \(\sigma _{xy}(T,{{{\mathbf{H}}}} = 0)\) and \(M_{{{\mathrm{z}}}}(T,{{{\mathbf{H}}}} = 0)\) near 26.5 K and fitted results (black dashed lines) with β = 0.499 and 0.492, respectively. f A plot of the longitudinal and zero-field anomalous Hall conductivity for several Co_xTaS₂ samples (0.31 < x < 0.325, see Supplementary Fig. 6), which were extracted from the \({\uprho}_{{{{\mathrm{xy}}}}}\left( {{{\mathbf{H}}}} \right)\) curves measured below 15 K.