Elastic propagation of fast electron vortices through amorphous materials,Acta Crystallographica Section A: Foundations and Advances

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Elastic propagation of fast electron vortices through amorphous materials
Acta Crystallographica Section A: Foundations and Advances ( IF 1.9 ) Pub Date : 2019-11-04 , DOI: 10.1107/s2053273319012889
Stefan Löffler ₁ , Stefan Sack ₂ , Thomas Schachinger ₁

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This work studies the elastic scattering behavior of electron vortices when propagating through amorphous samples. A formulation of the multislice approach in cylindrical coordinates is used to theoretically investigate the redistribution of intensity between different angular momentum components due to scattering. To corroborate and elaborate on our theoretical results, extensive numerical simulations are performed on three model systems (Si3N4, Fe0.8B0.2, Pt) for a wide variety of experimental parameters to quantify the purity of the vortices, the net angular momentum transfer, and the variability of the results with respect to the random relative position between the electron beam and the scattering atoms. These results will help scientists to further improve the creation of electron vortices and enhance applications involving them.

中文翻译：

快速电子涡流穿过非晶材料的弹性传播

这项工作研究了电子涡流在非晶样品中传播时的弹性散射行为。柱坐标系中的多层方法的公式用于从理论上研究由于散射而导致的不同角动量分量之间的强度重新分布。为了证实和详细阐述我们的理论结果，对三个模型系统（Si3氮4, 铁0.8乙0.2，Pt）用于各种实验参数，以量化涡流的纯度、净角动量转移以及结果相对于电子束和散射原子之间的随机相对位置的变化。这些结果将帮助科学家进一步改进电子涡旋的产生并增强涉及电子涡旋的应用。

更新日期：2019-11-04

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