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research article
Orientation dependence of ionization edges in EELS
2001
Anisotropy in the density of unoccupied states can be detected in the fine structure of ionization edges in angle-resolved EELS. It is shown that in a crystal an interference term occurs in the inelastic signal, and how it relates to electron channeling and site selection. The combination of orientation and site selection induces subtle variations in the ELNES. It is shown how this technique can be used to analyze local anisotropy related to the point group of the target atom. A second example shows how to extract non-dipole transitions at small scattering angles.
Type
research article
Authors
Publication date
2001
Published in
Volume
86
Issue
3-4
Start page
343
End page
353
Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
February 17, 2009
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