| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1677749 | Ultramicroscopy | 2012 | 5 Pages |
Abstract
⺠Spiral apertures form an alternative to fork apertures for producing electron vortex beams. ⺠Their advantage is that the three beams with different topological charge appear in different planes of focus. ⺠We show experimental evidence of vortex beams made with spiral apertures. ⺠We use them in a STEM setup to obtain the first atomic resolution HAADF STEM images with electron vortex probes. ⺠Such beams open the door for further atomic resolution magnetic information when combined with EELS.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
J. Verbeeck, H. Tian, A. Béché,