Electron Energy Loss in Composite Systems

J.M. Pitarke, J.B. Pendry, and P.M. Echenique

Abstract:

The interaction of scanning transmission electron microscopy electrons with composite systems is investigated by following a mean-field theory of the effective response function. Expressions for the inverse longitudinal dielectric function of isolated spheres and cylinders are derived. Experimental valence loss spectra from SiO₂ polymorphs are analyzed and the insensitivity of the plasmon peak to the density of the material is explained.

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last updated Thursday 24 July 2003 by JBP