Analysis of electromagnetic forces and causality in electron microscopy
2018
Abstract The non-physical effects on the transverse momentum transfer from fast electrons to gold nanoparticles associated to the use of non-causal dielectric functions are studied. A direct test of the causality based on the surface Kramers–Kronig relations is presented. This test is applied to the different dielectric function used to describe gold nanostructures in electron microscopy.
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