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@ARTICLE{Krause:837851,
author = {Krause, F. F. and Rosenauer, A. and Barthel, Juri and
Mayer, Joachim and Urban, Knut and Dunin-Borkowski, Rafal
and Brown, H. G. and Forbes, B. D. and Allen, Leslie J.},
title = {{A}tomic resolution elemental mapping using energy-filtered
imaging scanning transmission electron microscopy with
chromatic aberration correction},
journal = {Ultramicroscopy},
volume = {181},
issn = {0304-3991},
address = {Amsterdam},
publisher = {Elsevier Science},
reportid = {FZJ-2017-06628},
pages = {173 - 177},
year = {2017},
abstract = {This paper addresses a novel approach to atomic resolution
elemental mapping, demonstrating a method that produces
elemental maps with a similar resolution to the established
method of electron energy-loss spectroscopy in scanning
transmission electron microscopy. Dubbed energy-filtered
imaging scanning transmission electron microscopy (EFISTEM)
this mode of imaging is, by the quantum mechanical principle
of reciprocity, equivalent to tilting the probe in
energy-filtered transmission electron microscopy (EFTEM)
through a cone and incoherently averaging the results. In
this paper we present a proof-of-principle EFISTEM
experimental study on strontium titanate. The present
approach, made possible by chromatic aberration correction,
has the advantage that it provides elemental maps which are
immune to spatial incoherence in the electron source,
coherent aberrations in the probe-forming lens and probe
jitter. The veracity of the experiment is supported by
quantum mechanical image simulations, which provide an
insight into the image-forming process. Elemental maps
obtained in EFTEM suffer from the effect known as
preservation of elastic contrast, which, for example, can
lead to a given atomic species appearing to be in atomic
columns where it is not to be found. EFISTEM very
substantially reduces the preservation of elastic contrast
and yields images which show stability of contrast with
changing thickness. The experimental application is
demonstrated in a proof-of-principle study on strontium
titanate.},
cin = {ER-C-1 / PGI-5},
ddc = {570},
cid = {I:(DE-Juel1)ER-C-1-20170209 / I:(DE-Juel1)PGI-5-20110106},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28601013},
UT = {WOS:000411170800021},
doi = {10.1016/j.ultramic.2017.06.004},
url = {https://juser.fz-juelich.de/record/837851},
}