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arXiv · 2411.11754

Atomic-like selection rules in free electron scattering

Simon Garrigou·Hugo Lourenço-Martins
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Abstract

Phase-shaped electron energy-loss spectroscopy (PSEELS) measures the scattering probability of structured free electron beams by a target. Over the last decade, it was shown that this scheme can be employed to emulate polarized optical spectroscopies with electrons, and therefore to transpose macroscopic optical concepts - such as dichroism - down to the deep sub-wavelength scale. In this work, we theoretically demonstrate that PSEELS can, in fact, go way further than mimicking optics and enables to map a plethora of so far inaccessible nano-optical quantities such as the electric quadrupolar momentum.

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Simon Garrigou, Hugo Lourenço-Martins. 2024-11-18. Atomic-like selection rules in free electron scattering. https://arxiv.org/abs/2411.11754

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