Topological analysis of paraxially scattered electron vortex beams

Axel Lubk, Laura Clark, Giulio Guzzinati, Jo Verbeeck

Research output: Contribution to journalArticleResearchpeer-review

26 Citations (Scopus)

Abstract

We investigate topological aspects of subnanometer electron vortex beams upon elastic propagation through atomic scattering potentials. Two main aspects can be distinguished: (i) significantly reduced delocalization compared to a similar nonvortex beam if the beam centers on an atomic column and (ii) site symmetry dependent splitting of higher-order vortex beams. Furthermore, the results provide insight into the complex vortex line fabric within the elastically scattered wave containing characteristic vortex loops predominantly attached to atomic columns and characteristic twists of vortex lines around atomic columns.

Original languageEnglish
Article number033834
Number of pages8
JournalPhysical Review A
Volume87
Issue number3
DOIs
Publication statusPublished - 27 Mar 2013
Externally publishedYes

Cite this