论文标题
向Néel型Skyrmion过渡的动态过程的拓扑电荷分析：域壁的作用
Topological charge analysis of dynamic process of transition to Néel-type skyrmion: role of domain wall skyrmions
论文作者
论文摘要
磁性天空是令人着迷的拓扑自旋纹理，可以承诺未来的高密度自旋装置。基于天空的能量学了解了磁性天空的创建，但是Skyrmion创造的详细动态过程尚不清楚。在这里，使用微磁模拟研究了从不平衡的域转换为Néel-Skyrmions的拓扑演变。我们发现，新型拓扑缺陷的歼灭而不是整体拓扑充电，即最近建议的域壁空阵地，主要控制着天空的创造过程。同样，拓扑电荷演化是根据这种拓扑缺陷的数量和组合来解释的。
Magnetic skyrmions are intriguing topological spin textures that promise future high-density spintronic devices. The creation of magnetic skyrmions has been understood based on the energetics of skyrmions, but the detailed dynamic process of the skyrmion creation remains unclear. Here topological evolution in conversion from uneven domains to Néel-skyrmions is investigated using micromagnetic simulations. We find that, rather than the overall topological charge, annihilation of novel topological defects, i.e., recently suggested domain wall skyrmions, dominantly govern the skyrmion creation process. Also, the topological charge evolution is interpreted in terms of the number and the combination of such topological defects.
