Production and application of electron vortex beams

J. Verbeeck (), H. Tian and P. Schattschneider
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J. Verbeeck: Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
H. Tian: Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
P. Schattschneider: Institute for Solid State Physics and University Service Centre for Electron Microscopy, Vienna University of Technology

Nature, 2010, vol. 467, issue 7313, 301-304

Abstract: Electron beams with a twist It has been possible to produce photon vortex beams — optical beams with spiralling wavefronts — for some time, and they have found widespread application as optical tweezers, in interferometry and in information transfer, for example. The production of vortex beams of electrons was demonstrated earlier this year ( http://go.nature.com/4H2xWR ) in a procedure involving the passage of electrons through a spiral stack of graphite thin films. The ability to generate such beams reproducibly in a conventional electron microscope would enable many new applications. Now Jo Verbeeck and colleagues have taken a step towards that goal. They describe a versatile holographic technique for generating these twisted electron beams, and demonstrate their potential use as probes of a material's magnetic properties.

Date: 2010
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DOI: 10.1038/nature09366

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