Fig. 3: Spectral weight versus AHC in PrAlGe.

T dependence of the squared strength (\({{{\Omega }}}_{1}^{2}\)) of HO L1 (Supplementary Equation 1 and Supplementary Fig. 3) and of the Hall conductivity σ_xy, reproduced from ref. ¹². σ_xy is read at the magnetic field H = 6 T (H∥c-axis), where it saturates. It is known that \({\sigma }_{xy} \sim {\sigma }_{xy}^{A}\)¹². The linear fits (dashed lines) are guide to the eyes. The vertical dashed and dashed-dotted lines mark T_C and T_Θ¹², respectively. The error bars of \({{{\Omega }}}_{1}^{2}\) are estimated numerically within the non-linear least-squares fit technique. Inset: Δσ₁(ω) at 5 and 300 K with HO L1, showing its enhanced SW (colour shaded area) at T < T_C (see also Supplementary Note 4 and Supplementary Fig. 6).