Magnetic skyrmions, which are topologically protected particle-like spin textures, exhibit Brownian motion at ambient temperatures in a ferromagnetic thin film. The potential applications of a skyrmions’ diffusive motion to the ultra-low energy stochastic and Brownian computation make research on its thermal dynamics necessary. Herein we experimentally demonstrate the mobility anomaly of the diffusion coefficients in one-dimensional diffusion processes. In addition, we observed a chiral property in the velocity–position correlation functions. The results are discussed in the context of Brownian motion in the shallow potential fluctuations. The data indicate the importance of the chiral property of skyrmions in Brownian motion.

中文翻译：

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一维和二维系统中磁性 Skyrmions 的布朗运动

磁性斯格明子是受拓扑保护的粒子状自旋纹理，在铁磁薄膜中在环境温度下表现出布朗运动。斯格明子的扩散运动在超低能量随机和布朗计算中的潜在应用使得对其热动力学的研究成为必要。在这里，我们通过实验证明了一维扩散过程中扩散系数的迁移率异常。此外，我们在速度-位置相关函数中观察到了手征特性。结果在浅层电位波动中布朗运动的背景下进行了讨论。数据表明斯格明子在布朗运动中的手征性质的重要性。