Electron energy-loss spectroscopy of inhomogeneous systems

Ronald Fuchs, Carlos I. Mendoza, Rubén G. Barrera and JoséLuis Carrillo

Physica A: Statistical Mechanics and its Applications, 1997, vol. 241, issue 1, 29-44

Abstract: After beginning with a brief review of the theory of electron energy loss by an unbounded random system of spherical inclusions characterized by a local dielectric function, we examine several extensions of this theory. We first treat an inhomogeneous system of spherical particles confined to a half-space. A surface response function, which can be used tocalculate the energy-loss spectrum for charged particles moving outside the system, is defined, and this response function is written in a spectral representation. We discuss different approaches to this problem: the semiclassical infinite barrier model, an exact formal theory, and a continuous effective medium theory. Finally, we develop a theory of electron energy loss for a mixture of two components with arbitrary geometry, unbounded in three dimensions.

Keywords: Disordered systems; Electron energy-loss spectroscopy; Effective dielectric function; Spectral representation; Spherical inclusions; Surface response function (search for similar items in EconPapers)
Date: 1997
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:241:y:1997:i:1:p:29-44

DOI: 10.1016/S0378-4371(97)00056-3

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