Fig. 2: Conventional and anomalous drags of a single passive skyrmion.

a Constructed magnetic configuration with a single passive skyrmion and a skyrmion lattice in the active layers. b Conventional and c anomalous drags driven by current densities j = 0.5 and 5 MA cm−2, respectively. d Spatiotemporal evolution of the passive skyrmions, where the dashed circles label the locations of two skyrmions in the active layers, indicated by the inset. The colors have the same meaning as those in Fig. 1. e Dragging potential generated by skyrmion lattices. The red curve is the trajectory of the passive skyrmion in the moving potential. f Illustrations of the conventional and anomalous drags with the dashed circle representing the equilibrium configuration.