Chiral specific electron vortex beam spectroscopy

Abstract

Electron vortex beams carry well-defined orbital angular momentum (OAM) about the propagation axis. Such beams are thus characterised by chirality features which make them potentially useful as probes of magnetic and other chiral materials. An analysis of the inelastic processes in which electron vortex beams interact with atoms and which involve OAM exchange is outlined, leading to the multipolar selection rules governing this chiral specific electron vortex beam spectroscopy. Our results show clearly that the selection rules are dependent on the dynamical state and location of the atoms involved. In the most favorable scenario, this form of electron spectroscopy can induce magnetic sublevel transitions which are commonly probed using circularly polarized photon beams.

5 pages, 1 figures

References in corpus (10)

• Quantized Rotation of Atoms From Photons with Orbital Angular Momentum
• Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link
• Semiclassical Dynamics of Electron Wave Packet States with Phase Vortices
• Quantised orbital angular momentum transfer and magnetic dichroism in the interaction of electron vortices with matter
• Atomic scale electron vortices for nanoresearch
• Circular dichroism of cholesteric polymers and the orbital angular momentum of light
• A novel vortex generator and mode converter for electrons
• A new way of producing electron vortex probes for STEM
• Interaction of electron vortices and optical vortices with matter and processes of orbital angular momentum exchange
• Comment on "Quantized Orbital Angular Momentum Transfer and Magnetic Dichroism in the Interaction of Electron Vortices with Matter"

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• Structured x-ray beams from twisted electrons by inverse Compton scattering of laser light
• A Stern-Gerlach-like approach to electron orbital angular momentum measurement
• $Z_n$ symmetry in the vortex muon decay
• Electron vortex beams in non-uniform magnetic fields
• Nonlinear magneto-optical response to light carrying orbital angular momentum
• Singularities and internal rotational dynamics of electron beams
• Electron Spectra for Twisted Electron Collisions
• Paraxial Dirac equation