Skyrmion Diverter Based on Symmetric Multilayer System Driven by Spin–Orbit Torque

Magnetic skyrmions, as topologically protected spin textures with nanoscale size, hold great promise for high-density and low-energy-consumption spintronic applications. However, achieving precise and stable skyrmion separation in synthetic antiferromagnetic systems remains challenging due to synchronization effects and insufficient directional control under conventional driving mechanisms, and the practical utilization of separated skyrmions remains largely unexplored. In this paper, a funnel-shaped skyrmion diverter is proposed in a symmetric multilayer system to facilitate the separation of synthetic antiferromagnetic skyrmions using spin–orbit torque. Unlike conventional approaches, the symmetric chiral configuration with opposing Dzyaloshinskii–Moriya interactions eliminates synchronization effects and achieves robust directional control, while the semicircular bifurcation geometry significantly accelerates skyrmion dynamics. The separation mechanism is analyzed using the Thiele equation, validated by micromagnetic simulations, and the diverter’s performance in terms of separation precision, stability, loss rate, and response time is systematically investigated. The device achieves ultralow energy consumption, coupled with integrated dual-readers enabling real-time parallel detection and information proofreading, thereby ensuring separation precision under dynamic conditions. This work offers an energy-efficient, fault-tolerant skyrmion platform for next-generation spintronic devices.