论文标题
磁涡的惯性动力学的分析模型
Analytical model of the inertial dynamics of a magnetic vortex
论文作者
论文摘要
我们提出了一个分析模型，以说明磁涡的惯性动力学。该模型基于基于Döring动力场的核心谱的变形，从而将变形振幅促进到集体坐标方法中的动态变量，该方法为Thiele模型提供了自然扩展。该扩展模型准确地描述了由于惯性效应和有效质量变化而随速度的变化而引起的复杂瞬变。该模型还提供了导致Vortex Core反转的惯性动力学的定量描述，这与域壁动力学中的Walker Transition类似。
We present an analytical model to account for the inertial dynamics of a magnetic vortex. The model is based on a deformation of the core profile based on the Döring kinetic field, whereby the deformation amplitudes are promoted to dynamical variables in a collective-coordinate approach that provides a natural extension to the Thiele model. This extended model accurately describes complex transients due to inertial effects and the variation of the effective mass with velocity. The model also provides a quantitative description of the inertial dynamics leading up to vortex core reversal, which is analogous to the Walker transition in domain wall dynamics.
