Fig. 3

Analysis of the hump structure in the CT/BSTS heterostructure. a The reduced Hall resistivity trace (\({{\rho }^{{\prime }}}_{xy}\left(H\right)={\rho }_{AHE}+{\rho }_{hump}\)) of the CT/BSTS heterostructure at temperatures of 50, 60, 70, and 80 K. b, c The amplitude of anomalous Hall resistivity, \({R}_{AHE}\) (b) and the coercive field, \({H}_{c}\) (c) as a function of temperature. The definitions of \({R}_{AHE}\) and \({H}_{c}\) are shown in panel a. d The Kneller’s plot of \({H}_{c}\) vs. \({T}^{1/2}\). e The minor-loop measurement at 60 K with increasing Hⁿ_max =  −0.5 – −3 T and H^p_max = 3 T