Observation of FeGe skyrmions by electron phase microscopy with hole-free phase plate
Observation of FeGe skyrmions by electron phase microscopy with hole-free phase plate
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DOI：
10.1063/1.5028398
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发表时间：
2018-05-01
期刊：
影响因子：
1.6
通讯作者：
Mori, Shigeo
中科院分区：
文献类型：
--
作者：
Kotani, Atsuhiro;Harada, Ken;Mori, Shigeo
报道了无孔相位板（HFPP）在磁Skyrmion晶格成像中的应用。利用HFPP成像技术，我们观察到了FeGe中的Skyrmion，并成功地获得了反映样品磁化强度分布的相衬图像。根据Aharonov-Bohm效应，由于样品磁化，电子相位被磁通量移动。在HFPP图像的强度的差分处理，使我们能够成功地重建的Skyrmion晶格的磁化地图。此外，计算得到的薄膜磁化引起的相移与电子全息实验测量的相移一致，表明HFPP成像技术可用于纳米尺度下的磁场和静电势分布分析。(C)2018年作者。
We report application of hole-free phase plate (HFPP) to imaging of magnetic skyrmion lattices. Using HFPP imaging, we observed skyrmions in FeGe, and succeeded in obtaining phase contrast images that reflect the sample magnetization distribution. According to the Aharonov-Bohm effect, the electron phase is shifted by the magnetic flux due to sample magnetization. The differential processing of the intensity in a HFPP image allows us to successfully reconstruct the magnetization map of the skyrmion lattice. Furthermore, the calculated phase shift due to the magnetization of the thin film was consistent with that measured by electron holography experiment, which demonstrates that HFPP imaging can be utilized for analysis of magnetic fields and electrostatic potential distribution at the nanoscale. (C) 2018 Author(s).