Subatomic Channeling and Helicon-Type Beams in SrTiO3

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

doi:10.1103/PhysRevLett.122.075501

Subatomic Channeling and Helicon-Type Beams in SrTiO3

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

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Abstract

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 language	English (US)
Article number	075501
Journal	Physical review letters
Volume	122
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.122.075501
State	Published - 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.

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title = "Subatomic Channeling and Helicon-Type Beams in SrTiO3",

abstract = "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.",

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N2 - 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.

AB - 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.

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Subatomic Channeling and Helicon-Type Beams in SrTiO3

Abstract

Bibliographical note

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