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@ARTICLE{Ziese:885490,
author = {Ziese, M. and Jin, Lei and Lindfors-Vrejoiu, I.},
title = {{U}nconventional anomalous {H}all effect driven by
oxygen-octahedra-tailoring of the {S}r{R}u{O} 3 structure},
journal = {JPhys materials},
volume = {2},
number = {3},
issn = {2515-7639},
address = {Bristol},
publisher = {IOP Publishing},
reportid = {FZJ-2020-03871},
pages = {034008 -},
year = {2019},
abstract = {The anomalous Hall effect of SrRuO3 is of special interest,
since Weyl nodes appear in the band structure and lead to an
unconventional temperature dependence of the anomalous Hall
constant. Moreover, it has been proposed that coupling of
SrRuO3 films to materials with strong spin–orbit coupling
or with ferroelectric or ferromagnetic order might lead to
the formation of skyrmions and a topological contribution to
the Hall effect. This latter conjecture is strongly debated.
We probed this proposal by interfacing thin SrRuO3 layers to
Pr0.7Ca0.3MnO3, since it is known that the strong
antiferromagnetic coupling between these two ferromagnets
leads to complex magnetization states. Superlattices with
sharp interfaces were grown by pulsed-laser deposition. The
epitaxial interfacing with the Pr0.7Ca0.3MnO3 layers led to
major modifications of the structural symmetry of the SrRuO3
layers. High resolution scanning transmission electron
microscopy revealed that the individual SrRuO3 layers of the
superlattices had heterogeneous structure with varying
oxygen octahedral tilt angles across the layers, turning
their structure to be tetragonal-like, with largely
suppressed octahedral tilts when the thickness of the
neighboring Pr0.7Ca0.3MnO3 layers was increased. These
structural modifications were accompanied by major changes
in the field dependence of the Hall signal with the mainly
tetragonal SrRuO3 layers showing features strongly
reminiscent of a topological Hall effect. However, since
there was an intimate link between Hall effect and
structure, the Hall data were interpreted as arising from a
superposition of Hall effect contributions from tetragonal
and orthorhombic SrRuO3 sub-layers.},
cin = {ER-C-1},
ddc = {530},
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:000560035200006},
doi = {10.1088/2515-7639/ab1aef},
url = {https://juser.fz-juelich.de/record/885490},
}