论文标题
沿着固定阵列界面的引导Skyrmion运动
Guided Skyrmion Motion Along Pinning Array Interfaces
论文作者
论文摘要
我们检查了交流驱动的天空与两个不同障碍阵列结构之间的接口相互作用。我们考虑驱动振幅，其中散装障碍物中的天空仅经历局部运动，并表明当引入障碍晶格界面时，可以沿该界面发生定向的Skyrmion运输。天空可以通过直接接口进行引导，也可以转弯以跟随界面。对于嵌入具有较大晶格常数的正方形钉阵列中的平方障碍晶格，我们发现在相同的固定AC驱动器下，Skyrmions可以在所有四个主要的对称方向上进行运输。我们映射位置或翻译运动的位置，是交流驱动参数的函数。我们的结果提出了一种基于沿障碍晶格界面的运输的Skyrmion运动的新方法。
We examine ac driven skyrmions interacting with the interface between two different obstacle array structures. We consider drive amplitudes at which skyrmions in a bulk obstacle lattice undergo only localized motion and show that when an obstacle lattice interface is introduced, directed skyrmion transport can occur along the interface. The skyrmions can be guided by a straight interface and can also turn corners to follow the interface. For a square obstacle lattice embedded in a square pinning array with a larger lattice constant, we find that skyrmions can undergo transport in all four primary symmetry directions under the same fixed ac drive. We map where localized or translating motion occurs as a function of the ac driving parameters. Our results suggest a new method for controlling skyrmion motion based on transport along obstacle lattice interfaces.
