Curvature-stabilized skyrmions with angular momentum

Curvature-stabilized skyrmions with angular momentum
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DOI:
10.1007/s11005-019-01188-6
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发表时间:
2019-02
影响因子:
1.2
通讯作者:
C. Melcher;Zisis N. Sakellaris
C. Melcher;Zisis N. Sakellaris
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
C. Melcher;Zisis N. Sakellaris

文献摘要

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我们研究了具有大法向各向异性的球铁磁体上的Skyrmionic场组态。利用角动量的变分概念,我们找到了一族新的Landau-Lifshitz方程的局域解,它们在拓扑上与基态不同,并且不等变。值得注意的是,在一个简单的系统中,我们在磁化动力学水平上观察到了突然出现的自旋-轨道耦合,而在自旋和坐标空间中没有单独的旋转不变性。
We examine skyrmionic field configurations on a spherical ferromagnet with large normal anisotropy. Exploiting variational concepts of angular momentum, we find a new family of localized solutions to the Landau–Lifshitz equation that are topologically distinct from the ground state and not equivariant. Significantly, we observe an emergent spin–orbit coupling on the level of magnetization dynamics in a simple system without individual rotational invariance in spin and coordinate space.