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Title: Interpreting atomic resolution spectroscopic images

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.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [1]
  1. ORNL
  2. University of Melbourne, Australia
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
931652
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 76
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BINDING ENERGY; ELECTRONIC STRUCTURE; ENERGY-LOSS SPECTROSCOPY; RESOLUTION; SCATTERING; SPECTRA; DATA ANALYSIS

Citation Formats

Oxley, Mark P, Varela del Arco, Maria, Pennycook, Timothy J, van Benthem, Klaus, Findlay, Scott D., Allen, L. J., and Pennycook, Stephen J. Interpreting atomic resolution spectroscopic images. United States: N. p., 2007. Web. doi:10.1103/PhysRevB.76.064303.
Oxley, Mark P, Varela del Arco, Maria, Pennycook, Timothy J, van Benthem, Klaus, Findlay, Scott D., Allen, L. J., & Pennycook, Stephen J. Interpreting atomic resolution spectroscopic images. United States. doi:10.1103/PhysRevB.76.064303.
Oxley, Mark P, Varela del Arco, Maria, Pennycook, Timothy J, van Benthem, Klaus, Findlay, Scott D., Allen, L. J., and Pennycook, Stephen J. Mon . "Interpreting atomic resolution spectroscopic images". United States. doi:10.1103/PhysRevB.76.064303.
@article{osti_931652,
title = {Interpreting atomic resolution spectroscopic images},
author = {Oxley, Mark P and Varela del Arco, Maria and Pennycook, Timothy J and van Benthem, Klaus and Findlay, Scott D. and Allen, L. J. and Pennycook, Stephen J},
abstractNote = {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.},
doi = {10.1103/PhysRevB.76.064303},
journal = {Physical Review B},
number = ,
volume = 76,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}