论文标题
Skyrmion链中的孤子运动
Soliton Motion in Skyrmion Chains
论文作者
论文摘要
使用基于粒子的模型，我们检查了孤子链中孤子链中孤子链中的静止运动，在准尺寸（1D）和二维（2D）系统中，载有包含嵌入1D接口的二维（2D）系统。孤子在相应的天空链中采取粒子或孔的形式。在施加的驱动器下，在临界阈值阈值的上方，孤子以零的天堂厅角移动。对于更高的驱动器，整个链条以及在2D系统中，我们观察到，孤子和链条都以零的Skyrmion Hall角移动，然后随着驱动器的增加而过渡到有限的Skyrmion Hall角度。在具有与驾驶方向角度角度角度的1D接口的2D系统中，可以逆转Skyrmion Hall角度从正面到负面的符号。我们的结果表明，Skyrmion系统中的孤子可以用作赛马场几何形状中的信息载体，以避免有限的Skyrmion Hall角度的缺点。孤儿状态的移动性在驱动器上的流动性远低于Skyrmion链本身的过渡。
Using a particle-based model we examine the depinning motion of solitons in skyrmion chains in quasi-one dimensional (1D) and two-dimensional (2D) systems containing embedded 1D interfaces. The solitons take the form of a particle or hole in a commensurate chain of skyrmions. Under an applied drive, just above a critical depinning threshold the soliton moves with a skyrmion Hall angle of zero. For higher drives, the entire chain depins, and in a 2D system we observe that both the solitons and chain move at zero skyrmion Hall angle and then transition to a finite skyrmion Hall angle as the drive increases. In a 2D system with a 1D interface that is at an angle to the driving direction, there can be a reversal of the sign of the skyrmion Hall angle from positive to negative. Our results suggest that solitons in skyrmion systems could be used as information carriers in racetrack geometries that would avoid the drawbacks of finite skyrmion Hall angles. The soliton states become mobile at significantly lower drives than the depinning transition of the skyrmion chains themselves.
