Interaction of Individual Skyrmions in a Nanostructured Cubic Chiral Magnet
Interaction of Individual Skyrmions in a Nanostructured Cubic Chiral Magnet
复制标题
纳米结构立方手性磁体中单个斯格明子的相互作用
DOI：
10.1103/physrevlett.120.197203
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发表时间：
2018-05-11
影响因子：
8.6
通讯作者：
Tian, Mingliang
中科院分区：
文献类型：
--
作者：
Du, Haifeng;Zhao, Xuebing;Tian, Mingliang
我们报告的直接证据的场依赖性字符之间的相互作用，以及在B20型FeGe纳米条纹的高分辨率洛伦兹透射电子显微镜观察到的skyrmions和边缘之间的磁性skyrmions。结果表明，在一定的临界值以上的外部磁场的字符，这种远程skyrmion相互作用的变化从吸引到排斥。实验测得的平衡间skyrmion和skyrmion边缘的距离作为所施加的磁场的函数显示定量协议与微磁模拟的结果。详细讨论了退磁场的重要作用和三维磁skyrmions的内部对称性。
We report direct evidence of the field-dependent character of the interaction between individual magnetic skyrmions as well as between skyrmions and edges in B20-type FeGe nanostripes observed by means of high-resolution Lorentz transmission electron microscopy. It is shown that above certain critical values of an external magnetic field the character of such long-range skyrmion interactions changes from attraction to repulsion. Experimentally measured equilibrium inter-skyrmion and skyrmion-edge distances as a function of the applied magnetic field shows quantitative agreement with the results of micromagnetic simulations. The important role of demagnetizing fields and the internal symmetry of three-dimensional magnetic skyrmions are discussed in detail.