Subatomic Channeling and Helicon-Type Beams in SrTiO_{3}.
Phys Rev Lett
; 122(7): 075501, 2019 Feb 22.
Article
em En
| MEDLINE
| ID: mdl-30848623
ABSTRACT
Inspired by recent experimental subatomic measurements using analytical aberration-corrected scanning transmission electron microscopes, we study electron probe propagation in crystalline SrTiO_{3} 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.
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MEDLINE
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En
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2019
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Article