论文标题
微磁性框架中的磁性天际相互作用
Magnetic skyrmion interactions in the micromagnetic framework
论文作者
论文摘要
磁性天空是具有非平凡拓扑绕组数的磁化漩涡。这种绕组提高了他们对超级磁性的鲁棒性，并带来了无数新颖的动力学特性，使它们作为下一代信息载体具有吸引力。最近，使用Thiele开创的方法得出了Skyrmion的运动方程，从而使宏观的Skyrmion系统有效地建模。这项强大的技术遭受了先决条件的困扰，即人们必须先验地了解天空与其环境中所有其他磁性结构之间相互作用的功能形式。在这里，我们试图通过提供简单的分析表达来减轻这个问题，该表达可以从微磁性哈密顿量产生任意的排斥相互作用潜力。我们还讨论了Skyrmion的径向轮廓的玩具模型，该模型对于广泛的材料参数是准确的。
Magnetic skyrmions are localized swirls of magnetization with a non-trivial topological winding number. This winding increases their robustness to superparamagnetism and gives rise to a myriad of novel dynamical properties, making them attractive as next-generation information carriers. Recently the equation of motion for a skyrmion was derived using the approach pioneered by Thiele, allowing for macroscopic skyrmion systems to be modeled efficiently. This powerful technique suffers from the prerequisite that one must have a priori knowledge of the functional form of the interaction between a skyrmion and all other magnetic structures in its environment. Here we attempt to alleviate this problem by providing a simple analytic expression which can generate arbitrary repulsive interaction potentials from the micromagnetic Hamiltonian. We also discuss a toy model of the radial profile of a skyrmion which is accurate for a wide range of material parameters.
