IBM Research-Zurich, Rüschlikon, Switzerland.
Phys Rev Lett. 2011 Nov 11;107(20):207204. doi: 10.1103/PhysRevLett.107.207204.
Domain wall dynamics in wide submicrometer wires is investigated to understand the fundamental mechanisms that limit wall mobility, both experimentally by magneto-optical Kerr effect and by micromagnetic simulations. It is found that the dynamic domain wall structure departs significantly from the current description of a compact entity when evolving along the wire. The wall is composed of several substructures, each one propagating and evolving in a different dynamic regime with very different velocities.
我们研究了宽亚微米尺寸金属线中的畴壁动力学，以从实验（磁光克尔效应）和微磁模拟两方面来理解限制畴壁迁移率的基本机制。我们发现，当畴壁沿金属线运动时，其动态结构明显偏离当前对致密实体的描述。畴壁由几个亚结构组成，每个亚结构以不同的速度在不同的动态模式中传播和演化。
