Abstract
Spin waves (SWs) have been proved to be promising candidates for driving skyrmion motion, while the small velocity limits its further applications. Herein, we demonstrated theoretically the regulation of SW-driven skyrmion dynamics on wedge nanotracks. It is found that the edge potential barrier acts as an extra driving force and increases the skyrmion velocity by nearly 60%. By analyzing Thiele equation and velocity fitting function, we determined the optimal inclined angle and gave the quantitative expression of the increased velocity with respect to material and geometric parameters. Our results are useful for understanding the dynamic behaviors of SW-driven skyrmion and may provide guidelines for designing skyrmionic racetrack memory.
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