Field-Dependent Size and Shape of Single Magnetic Skyrmions
Field-Dependent Size and Shape of Single Magnetic Skyrmions
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DOI：
10.1103/physrevlett.114.177203
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发表时间：
2015-05-01
影响因子：
8.6
通讯作者：
Wiesendanger, Roland
中科院分区：
文献类型：
--
作者：
Romming, Niklas;Kubetzka, Andre;Wiesendanger, Roland
利用自旋极化扫描隧道显微镜研究了超薄膜中单个孤立的Skyrmions的原子尺度自旋结构。利用面外和面内敏感尖端揭示了它们的轴对称和独特的旋转感觉。Skyrmions的大小和形状随着磁场的变化而变化。提出了一种描述手性Skyrmions的解析表达式，并将实验数据与描述手性Skyrmions的原始理论模型联系起来。从而得到负责Skyrmion形成的相关材料参数。
The atomic-scale spin structure of individual isolated Skyrmions in an ultrathin film is investigated in real space by spin-polarized scanning tunneling microscopy. Their axial symmetry as well as their unique rotational sense is revealed by using both out-of-plane and in-plane sensitive tips. The size and shape of Skyrmions change as a function of the magnetic field. An analytical expression for the description of Skyrmions is proposed and applied to connect the experimental data to the original theoretical model describing chiral Skyrmions. Thereby, the relevant material parameters responsible for Skyrmion formation can be obtained.