论文标题
旋转波驱动磁纹理运动的解剖学通过宏伟的扭矩
Anatomy of spin wave driven magnetic texture motion via magnonic torques
论文作者
论文摘要
自旋波和磁纹理之间的相互作用表示磁系统的快速和缓慢动力学部分之间的信息交换。在这里，我们通过从快速进取的旋转波中提取时间不变的信息来制定作用在背景磁纹理上的镁扭矩。在磁符号的框架下，我们使用理论配方和微磁模拟在两个典型的对称性破坏情况下研究自旋波驱动的结构域壁运动：Dzyaloshinkii-Moriya相互作用折断的旋转对称性，以及被磁性阻尼破坏的翻译对称性。基于扭矩的显微镜分析提供了紧凑而定量的工具，以重新解释由自旋波引起的磁纹理动力学，而不是全球动量保护的常规框架。
The interplay between spin wave and magnetic texture represents the information exchange between the fast and slow dynamical parts of magnetic systems. Here we formulate a set of magnonic torques acting on background magnetic texture, by extracting time-invariant information from the fast precessing spin waves. Under the frame of magnonic torques, we use theoretical formulations and micromagnetic simulations to investigate the spin wave driven domain wall motion in two typical symmetry-breaking situations: the rotational symmetry broken by the Dzyaloshinkii-Moriya interaction, and the translational symmetry broken by magnetic damping. The torque-based microscopic analyses provide compact yet quantitative tools to reinterpret the magnetic texture dynamics induced by spin wave, beyond the conventional framework of global momentum conservation.
