论文标题
二维磁铁Crcl3中梅隆拓扑自旋纹理的属性和动力学
Properties and dynamics of meron topological spin textures in the two-dimensional magnet CrCl3
论文作者
论文摘要
梅隆是非平凡的拓扑自旋纹理，与固态物理学中许多现象高度相关。尽管它们很重要，但直接观察这种涡旋准颗粒还是很少的，并且仅限于一些复杂的材料。在这里，我们在最近在零磁场上发现的二维（2D）CRCL3中显示了Merons和Antimons的出现。我们从配对的创造中展示了它们的整个演变，它们在亚稳态壁上的扩散以及导致大型磁性单域的碰撞。在冷却期间，在发生平面磁性挫折的区域，这两个准颗粒都自发地稳定。它们的动力学取决于强平面偶性相互作用与弱面外磁各向异性之间的相互作用，使半径为8-10 nm的涡流稳定稳定。我们的结果将边界推向了2D磁铁中非平凡的自旋结构的目前已知的边界，并开放了通过拓扑清理控制磁性域的激动人心的机会。
Merons are nontrivial topological spin textures highly relevant for many phenomena in solid state physics. Despite their importance, direct observation of such vortex quasiparticles is scarce and has been limited to a few complex materials. Here we show the emergence of merons and antimerons in recently discovered two-dimensional (2D) CrCl3 at zero magnetic field. We show their entire evolution from pair creation, their diffusion over metastable domain walls, and collision leading to large magnetic monodomains. Both quasiparticles are stabilized spontaneously during cooling at regions where in-plane magnetic frustration takes place. Their dynamics is determined by the interplay between the strong in-plane dipolar interactions and the weak out-of-plane magnetic anisotropy stabilising a vortex core within a radius of 8-10 nm. Our results push the boundary to what is currently known about non-trivial spin structures in 2D magnets and open exciting opportunities to control magnetic domains via topological quasiparticles.
