The spatial resolution of imaging using core-loss spectroscopy in the scanning transmission electron microscope
The spatial resolution of imaging using core-loss spectroscopy in the scanning transmission electron microscope
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DOI：
10.1016/j.ultramic.2004.11.001
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发表时间：
2005-03-01
期刊：
影响因子：
2.2
通讯作者：
Pennycook, SJ
中科院分区：
文献类型：
--
作者：
Cosgriff, EC;Oxley, MP;Pennycook, SJ
非弹性散射的“离域”是影响电子显微镜芯损耗谱最终空间分辨率的一个重要问题。本文研究了单个孤立原子的扫描透射电子显微镜图像的分辨率。图像模拟从第一原理使用非局部模型的电子芯损耗谱。被认为是潜在的电离相互作用的离域的探针相对的宽度的作用。(C)2004 Elsevier B.V.保留所有权利。
The 'delocalization' of inelastic scattering is an important issue for the ultimate spatial resolution of core-loss spectroscopy in the electron microscope. This paper investigates the resolution of scanning transmission electron microscopy images for single, isolated atoms. Images are simulated from first principles using a nonlocal model for electron core-loss spectroscopy. The role of the width of the probe relative to the delocalization of the underlying ionization interaction is considered. (C) 2004 Elsevier B.V. All rights reserved.