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@ARTICLE{Nord:893830,
author = {Nord, Magnus and Barthel, Juri and Allen, Christopher S.
and McGrouther, Damien and Kirkland, Angus I. and MacLaren,
Ian},
title = {{A}tomic resolution {HOLZ}-{STEM} imaging of atom position
modulation in oxide heterostructures},
journal = {Ultramicroscopy},
volume = {226},
issn = {0304-3991},
address = {Amsterdam},
publisher = {Elsevier Science},
reportid = {FZJ-2021-02869},
pages = {113296 -},
year = {2021},
abstract = {It is shown that higher order Laue zone (HOLZ) rings in
high energy electron diffraction are specific to individual
columns of atoms, and show different strengths, structure
and radii for different atom columns along the same
projection in a structure. An atomic resolution
4-dimensional STEM dataset is recorded from a <110>
direction in a perovskite trilayer, where only the central
LaFeO3 layer should show a period doubling that gives rise
to an extra HOLZ ring. Careful comparison between experiment
and multislice simulations is used to understand the origins
of all features in the patterns. A strong HOLZ ring is seen
for the La-O columns, indicating strong La position
modulation along this direction, whereas a weaker ring is
seen along the O columns, and a very weak ring is seen along
the Fe columns. This demonstrates that atomic resolution
HOLZ-STEM is a feasible method for investigating the 3D
periodicity of crystalline materials with atomic
resolution.},
cin = {ER-C-2},
ddc = {570},
cid = {I:(DE-Juel1)ER-C-2-20170209},
pnm = {5351 - Platform for Correlative, In Situ and Operando
Characterization (POF4-535) / 5352 - Understanding the
Functionality of Soft Matter and Biomolecular Systems
(POF4-535)},
pid = {G:(DE-HGF)POF4-5351 / G:(DE-HGF)POF4-5352},
typ = {PUB:(DE-HGF)16},
pubmed = {34004555},
UT = {WOS:000661167900006},
doi = {10.1016/j.ultramic.2021.113296},
url = {https://juser.fz-juelich.de/record/893830},
}