论文标题

从条纹状态到天空晶体的转变

Transformations from stripy states to skyrmion crystals

论文作者

Wang, X. R., Hu, X. C., Sun, Z. Z.

论文摘要

条纹状态,由一系列条纹旋转纹理组成,是Skyrmion Crystals(SKXS)的前体。普遍的信念是条纹状态和SKX在拓扑上是没有连接的,而SKX和条纹状态之间的过渡是相变。在这里,我们表明条纹状态和Skxs都是Skyrmion冷凝物,它们在拓扑上是等效的。通过逐渐调整宽度的条纹,其宽度从小而不是Skyrmion-Skyrmion的分离,Skyrmion冷凝物的结构从各种条纹相位,包括螺旋状状态和迷宫(包括螺旋状状态和迷宫),转变为晶体,表明条纹状态与SKXS拓扑相连。

Stripy states, consisting of a collection of stripy spin textures, are the precursors of skyrmion crystals (SkXs). Common belief is that stripy states and SkXs are topologically unconnected, and transitions between SkXs and stripy states are phase transitions. Here, we show that both stripy states and SkXs are skyrmion condensates and they are topologically equivalent. By gradually tuning the stripe whose width goes from smaller than to larger than skyrmion-skyrmion separation, the structure of a skyrmion condensate transforms smoothly and continuously from various stripy phases, including helical states and mazes, to crystals, showing that stripy states are topologically connected to SkXs.

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