Magnetic skyrmions are self-organized topological spin textures that behave like particles. Because of their fast creation and typically long lifetime, experimental verification of skyrmion’s creation/annihilation processes has been challenging. Here, we successfully track skyrmion dynamics in defect-introduced Co₉Zn₉Mn₂ by using pump-probe Lorentz transmission electron microscope. Following the nanosecond photothermal excitation, we resolve 160-nm skyrmion’s proliferation at <1 ns, contraction at 5 ns, drift from 10 ns to 4 μs, and coalescence at ~5 μs. These motions relay the multiscale arrangement and relaxation of skyrmion clusters in a repeatable cycle of 20 kHz. Such repeatable dynamics of skyrmions, arising from the weakened but still persistent topological protection around defects, enables us to visualize the whole life of the skyrmions and demonstrates the possible high-frequency manipulations of topological charges brought by skyrmions.

磁性斯格明子是自组织拓扑自旋纹理，其行为类似于粒子。由于它们的快速创建和通常很长的寿命，对斯格明子的创建/湮灭过程的实验验证一直具有挑战性。在这里，我们成功地跟踪了引入缺陷的 Co ₉ Zn ₉ Mn _{2 中的}斯格明子动力学通过使用泵浦探针洛伦兹透射电子显微镜。在纳秒光热激发之后，我们解决了 160 nm 斯格明子在 <1 ns 时的增殖、5 ns 时的收缩、10 ns 到 4 μs 的漂移以及~5 μs 时的聚结。这些运动以 20 kHz 的可重复周期传递斯格明子簇的多尺度排列和弛豫。这种可重复的斯格明子动力学源于缺陷周围减弱但仍然持续的拓扑保护，使我们能够可视化斯格明子的整个生命周期，并证明斯格明子可能对拓扑电荷进行高频操作。