磁涡旋惯性动力学的解析模型
Analytical model of the inertial dynamics of a magnetic vortex
摘要：
我们提出了一个分析模型来解释磁涡旋的惯性动力学。该模型是基于变形的核心配置文件的基础上的Döring动力场，其中的变形幅度被提升到动态变量的集体坐标的方法，提供了一个自然的扩展Thiele模型。该扩展模型准确地描述了由于惯性效应和有效质量随速度的变化而引起的复杂瞬态。该模型还提供了一个定量描述的惯性动力学导致涡核反转，这是类似的沃克转变畴壁动力学。
英文摘要：
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.
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