Tunable skyrmion–edge interaction in magnetic multilayers by interlayer exchange coupling

Magnetic skyrmions are appealing for applications in emerging topological spintronic devices. However, when magnetic a nanowire driven by an in-plane current, transverse Magnus force deflects their trajectories from the current direction, which tends to push skyrmion toward edge. If density is exceedingly large, will be annihilated around edge, leading greatly reduced propagation distance and maximum speed of skyrmion, detrimental skyrmion-based applications. Here, we prepare multilayer Ta/[Pt/Co] 3 /Ru/[Co/Pt] tailor interlayer exchange coupling strength varying thickness Ru layer. Based on magneto-optic Kerr effect microscope, find that skyrmion–edge interaction tunable strength, namely, repulsive potential film edge tailored strength. Our results unveil significant role dynamics.