论文标题
两种类型的亚稳态磁跳
Two types of metastable magnetic hopfions
论文作者
论文摘要
理论上从经典的微磁性哈密顿量开始研究，在无限的大块磁铁中，在无界的大块磁铁中具有1个HOPF指数的局部磁性拓扑。从分析上显示的是，（如经典磁性中的Bloch和Néel壁）有两种可能的稳定构型，这些孤子构成了拓扑等效。它们的稳定性区域绘制在磁场的相图上 - 单轴各向异性空间，用于不同的归一化磁相互作用强度。对于某些参数，两种类型的跳跃都可以稳定。
Localized magnetic topological solitons with Hopf index of 1 in an unbounded bulk magnet are studied theoretically, starting with the classical micromagnetic Hamiltonian. It is shown analytically that (like Bloch and Néel walls in classical magnetism) there are two possible stable configurations of these solitons, which are equivalent topologically. Their stability regions are plotted on a phase diagram in the magnetic field -- uniaxial anisotropy space for different normalized magnetostatic interaction strengths. For some parameters both types of hopfions can be stable.
