Development of five-dimensional scanning transmission electron microscopy
Development of five-dimensional scanning transmission electron microscopy
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DOI：
10.1063/5.0106517
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发表时间：
2023-02-01
影响因子：
1.6
通讯作者：
Ishizaka, K.
中科院分区：
文献类型：
--
作者：
Shimojima, T.;Nakamura, A.;Ishizaka, K.
通过将扫描透射电子显微镜与超快光学泵浦-探测技术相结合，我们将微分相衬和会聚束电子衍射成像的时间分辨率提高了约10（12）倍。这些方法提供了纳米材料中物理量的超快纳米级电影，例如晶格变形，磁化矢量和电场。我们证明了光生声声子传播的观测精度为4 ps和8 nm和超快退磁下的零磁场与10 ns和400 nm的分辨率，利用这些方法。(c)2023年作者。
By combining the scanning transmission electron microscopy with the ultrafast optical pump-probe technique, we improved the time resolution by a factor of similar to 10(12) for the differential phase contrast and convergent-beam electron diffraction imaging. These methods provide ultrafast nanoscale movies of physical quantities in nano-materials, such as crystal lattice deformation, magnetization vector, and electric field. We demonstrate the observations of the photo-induced acoustic phonon propagation with an accuracy of 4 ps and 8 nm and the ultrafast demagnetization under zero magnetic field with 10 ns and 400 nm resolution, by utilizing these methods. (c) 2023 Author(s).