Fig. 1: Skyrmion drag in magnetic triple-layers.
a Sketch of the magnetic multilayers composed of stacked heavy metal/ferromagnet/heavy metal layers. The insulating layer is introduced to ensure the electric current applied only in selected layers. b Initial state used in our micromagnetic simulation, where the black (white) areas denote their magnetization being along the − z (+ z) direction and the colorful regions reflect the orientation of local magnetization in the x-y plane. c Enlarged plot of magnetic textures in different layers. The trajectories of skyrmion centers with the current densities d j = 0.5 MA cm−2 and e j = 5 MA cm−2. The color bars represent the simulation time.
