We report on the formation process of skyrmion lattice (SkL) domain boundaries in FeGe using Lorentz transmission electron microscopy and small-angle electron diffraction. We observed that grain boundaries and edges play an important role in the formation of SkL domain boundaries; The SkL domain boundary is stabilized at the intersection of two grains. A micromagnetic simulation using the Landau-Lifshitz-Gilbert equation revealed that the SkL domains separated by a boundary represent the lowest energy configuration. Conversely, in a wide area, SkL domain boundaries were not formed and SkL domains with different orientations rotated to form a single SkL domain.

中文翻译：

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斯格明子晶格域边界的形成过程：晶界的作用

我们使用洛伦兹透射电子显微镜和小角度电子衍射报告了 FeGe 中斯格明子晶格 (SkL) 域边界的形成过程。我们观察到晶界和边缘在 SkL 域边界的形成中起着重要作用；SkL 域边界稳定在两个晶粒的交叉处。使用 Landau-Lifshitz-Gilbert 方程的微磁模拟表明，由边界分隔的 SkL 域代表最低能量配置。相反，在大范围内，没有形成 SkL 域边界，并且不同方向的 SkL 域旋转形成单个 SkL 域。