论文标题
2s Bloch波状态激发在茎-HAADF强度中的作用在合金定量分析中的作用
The role of 2s Bloch wave state excitations on STEM-HAADF intensity in quantitative analysis of alloys
论文作者
论文摘要
在这项工作中，我们强调了2s Bloch波状态对在原子柱上传播的茎电子探针的特性的重要贡献。对于足够强的色谱柱电势，2S状态的限制导致电子波函数的长周期振荡，这反映在所得的茎-HAADF强度中。我们展示了这如何影响茎组成定量，即使在较大的厚度下也是如此。我们还发现，2s状态的激发会影响存在远距离现象的合金强度，这反过来又提供了一种探测合金中有序程度的方法。
In this work, we emphasize the important contribution of the 2s Bloch wave state to the properties of a STEM electron probe propagating on an atomic column. For a strong enough column potential, the confinement of the 2s state leads to a long-period oscillation of the electron wave function, which is reflected in the resulting STEM-HAADF intensity. We show how this influences STEM composition quantification even at large thicknesses. We found additionally that the excitation of the 2s state affects the intensity of alloys where long-range order phenomena are present, which in turn provides a way to probe the degree of order in alloys.
