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Inspired by recent experimental subatomic measurements using analytical aberration-corrected scanning transmission electron microscopes, we study electron probe propagation in crystalline SrTiO3 at the subatomic length scale. Here, we report the existence of subatomic channeling and the formation of a helicon-type beam at this scale. The results of beam propagation simulations, which are performed at various crystal temperatures, STEM probe convergence angles (10-50 mrad), and beam energies (80-300 keV), showed that reducing the ambient temperature can enhance the subatomic channeling and STEM probe parameters can be used to control the features of helicon-type beams.
Bibliographical noteFunding Information:
This work was supported in part by the NSF MRSEC under Grant No. DMR-1420013, and in part by the Grant-in-Aid program of the University of Minnesota. The channeling simulations were performed at the Minnesota Supercomputing Institute at the University of Minnesota.
© 2019 American Physical Society.
How much support was provided by MRSEC?
PubMed: MeSH publication types
- Journal Article
FingerprintDive into the research topics of 'Subatomic Channeling and Helicon-Type Beams in SrTiO3'. Together they form a unique fingerprint.
- 3 Finished
11/1/14 → 9/30/21
Project: Research project