Current-Induced Helicity Switching of Frustrated Skyrmions on a Square-Grid Obstacle Pattern

Topological spin textures on artificial pinning landscape may show unique static and dynamic properties. Here, we computationally that the helicity of frustrated skyrmions an square-grid obstacle pattern can be switched by a current pulse. The is formed defect lines with enhanced perpendicular magnetic anisotropy, which could protect skyrmion from being annihilated at sample edge. It found driven moderate shows circular motion guided boundary pattern, while it almost straight toward edge in absence pattern. By applying short pulse to drive find between Bloch-type configurations favored dipole-dipole interaction. Besides, demonstrate possibility switching array using same method. Our results useful for control topological textures, provide guidelines building future helicity-based spintronic functions.