Electron vortex production and control using aberration induced diffraction catastrophes

Timothy Petersen, Matthew Weyland, David Paganin, Tapio Petteri Simula, Samuel Anthony Eastwood, Michael John Morgan

Research output: Contribution to journalArticleResearchpeer-review

Abstract

An aberration corrected electron microscope is used to create electron diffraction catastrophes,containing arrays of intensity zeros threading vortex cores. Vortices are ascribed to these arrays using catastrophe theory, scalar diffraction integrals, and experimentally retrieved phase maps. From measured wave function phases, obtained using focal-series phase retrieval, the orbital angular momentum density is mapped for highly astigmatic electron probes. We observe vortex rings and topological reconnections of nodal lines by tracking the vortex cores using the retrieved phases.
Original languageEnglish
Article number033901
Number of pages5
JournalPhysical Review Letters
Volume110
Issue number3
DOIs
Publication statusPublished - 2013

Cite this

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title = "Electron vortex production and control using aberration induced diffraction catastrophes",
abstract = "An aberration corrected electron microscope is used to create electron diffraction catastrophes,containing arrays of intensity zeros threading vortex cores. Vortices are ascribed to these arrays using catastrophe theory, scalar diffraction integrals, and experimentally retrieved phase maps. From measured wave function phases, obtained using focal-series phase retrieval, the orbital angular momentum density is mapped for highly astigmatic electron probes. We observe vortex rings and topological reconnections of nodal lines by tracking the vortex cores using the retrieved phases.",
author = "Timothy Petersen and Matthew Weyland and David Paganin and Simula, {Tapio Petteri} and Eastwood, {Samuel Anthony} and Morgan, {Michael John}",
year = "2013",
doi = "10.1103/PhysRevLett.110.033901",
language = "English",
volume = "110",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "APS",
number = "3",

}

Electron vortex production and control using aberration induced diffraction catastrophes. / Petersen, Timothy; Weyland, Matthew; Paganin, David; Simula, Tapio Petteri; Eastwood, Samuel Anthony; Morgan, Michael John.

In: Physical Review Letters, Vol. 110, No. 3, 033901, 2013.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Electron vortex production and control using aberration induced diffraction catastrophes

AU - Petersen, Timothy

AU - Weyland, Matthew

AU - Paganin, David

AU - Simula, Tapio Petteri

AU - Eastwood, Samuel Anthony

AU - Morgan, Michael John

PY - 2013

Y1 - 2013

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AB - An aberration corrected electron microscope is used to create electron diffraction catastrophes,containing arrays of intensity zeros threading vortex cores. Vortices are ascribed to these arrays using catastrophe theory, scalar diffraction integrals, and experimentally retrieved phase maps. From measured wave function phases, obtained using focal-series phase retrieval, the orbital angular momentum density is mapped for highly astigmatic electron probes. We observe vortex rings and topological reconnections of nodal lines by tracking the vortex cores using the retrieved phases.

U2 - 10.1103/PhysRevLett.110.033901

DO - 10.1103/PhysRevLett.110.033901

M3 - Article

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 3

M1 - 033901

ER -