Publication Type
Journal
Journal Name
Physical Review B
Publication Date
Page Number
064303
Volume
76
Abstract
Core-loss electron energy loss spectroscopy is a
powerful experimental tool providing information about electronic
structure essential for understanding the properties of new and
emerging materials. Here we show that the shape and width of
spectroscopic images do not show a simple variation with binding
energy, as commonly assumed. Rather they exhibit a complex
dependence on the effective nonlocal scattering potential, and also
on the dynamical channeling and absorption of the incident probe
through the specimen. Consequently, in LaMnO$_3$, the low lying La N$_{4,5}$ edge at 99 eV can produce images of similar width to higher lying edges
such as the O $K$ edge at 532 eV.
