Subatomic Channeling and Helicon-Type Beams in SrTiO3

Jong Seok Jeong, Hosup Song, Jacob T. Held, Andre Mkhoyan

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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.

Original languageEnglish (US)
Article number075501
JournalPhysical review letters
Issue number7
StatePublished - Feb 20 2019

Bibliographical note

Funding 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.

Publisher Copyright:
© 2019 American Physical Society.

MRSEC Support

  • Primary

PubMed: MeSH publication types

  • Journal Article


Dive into the research topics of 'Subatomic Channeling and Helicon-Type Beams in SrTiO3'. Together they form a unique fingerprint.

Cite this