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@ARTICLE{Jin:826773,
author = {Jin, Lei and Xu, P. X. and Lu, Lu and Barthel, Juri and
Schulthess, T. and Dunin-Borkowski, Rafal and Wang, H. and
Jia, Chun-Lin},
title = {{S}urface reconstructions and related local properties of a
{B}i{F}e{O}$_{3}$ thin film},
journal = {Scientific reports},
volume = {7},
number = {1},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2017-00990},
pages = {39698},
year = {2017},
abstract = {Coupling between lattice and order parameters, such as
polarization in ferroelectrics and/or polarity in polar
structures, has a strong impact on surface relaxation and
reconstruction. However, up to now, surface structures that
involve the termination of both matrix polarization and
polar atomic planes have received little attention,
particularly on the atomic scale. Here, we study surface
structures on a BiFeO3 thin film using atomic-resolution
scanning transmission electron microscopy and spectroscopy.
Two types of surface structure are found, depending on the
polarization of the underlying ferroelectric domain. On
domains that have an upward polarization component, a layer
with an Aurivillius-Bi2O2-like structural unit is observed.
Dramatic changes in local properties are measured directly
below the surface layer. On domains that have a downward
polarization component, no reconstructions are visible.
Calculations based on ab initio density functional theory
reproduce the results and are used to interpret the
formation of the surface structures.},
cin = {ER-C-1},
ddc = {000},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000392180500001},
doi = {10.1038/srep39698},
url = {https://juser.fz-juelich.de/record/826773},
}