Three-wave electron vortex lattices for measuring nanofields

Dwyer, Christian; Boothroyd, Chris; Chang, Shery L. Y.; Dunin-Borkowski, Rafal E.

doi:10.1016/j.ultramic.2014.08.011

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…The crossings of the nodal lines in the standing waves are locations of vortices which form a regular array. Both square and triangular arrays of vortices are produced in this manner by adjusting the relative angles of the two sets of standing waves (Dwyer et al, 2015;Niermann et al, 2014). Such lattices will have a pattern of vortices and anti-vortices regularly arranged, with locally varying orbital angular momentum density.…”

Section: Vortex Latticesmentioning

confidence: 99%

Electron vortices: Beams with orbital angular momentum

et al. 2017

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The recent prediction and subsequent creation of electron vortex beams in a number of laboratories occurred after almost 20 years had elapsed since the recognition of the physical significance and potential for applications of the orbital angular momentum carried by optical vortex beams. A rapid growth in interest in electron vortex beams followed, with swift theoretical and experimental developments. Much of the rapid progress can be attributed in part to the clear similarities between electron optics and photonics arising from the functional equivalence between the Helmholtz equations governing the free space propagation of optical beams and the time-independent Schrödinger equation governing freely propagating electron vortex beams. There are, however, key di↵erences in the properties of the two kinds of vortex beams. This review is concerned primarily with the electron type, with specific emphasis on the distinguishing vortex features: notably the spin, electric charge, current and magnetic moment, the spatial distribution as well as the associated electric and magnetic fields. The physical consequences and potential applications of such properties are pointed out and analysed, including nanoparticle manipulation and the mechanisms of orbital angular momentum transfer in the electron vortex interaction with matter.

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Section: Vortex Latticesmentioning

confidence: 99%