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@ARTICLE{Samanta:890966,
author = {Samanta, Kartik and Ležaić, Marjana and Blügel, Stefan
and Mokrousov, Yuriy},
title = {{T}ailoring the anomalous {H}all effect of {S}r{R}u{O} 3
thin films by strain: {A} first principles study},
journal = {Journal of applied physics},
volume = {129},
number = {9},
issn = {1089-7550},
address = {Melville, NY},
publisher = {American Inst. of Physics},
reportid = {FZJ-2021-01282},
pages = {093904},
year = {2021},
abstract = {Motivated by the recently observed unconventional Hall
effect in ultrathin films of ferromagnetic SrRuO3 (SRO), we
investigate the effect of strain-induced oxygen octahedral
distortion in the electronic structure and anomalous Hall
response of the SRO ultrathin films by virtue of density
functional theory calculations. Our findings reveal that the
ferromagnetic SRO films grown on SrTiO3 (in-plane strain of
$−0.47\%)$ have an orthorhombic (both tilting and
rotation) distorted structure, and with an increasing amount
of substrate induced compressive strain the octahedral
tilting angle is found to be suppressed gradually, with SRO
films grown on NdGaO3 (in-plane strain of $−1.7\%)$
stabilized in the tetragonal distorted structure (with zero
tilting). Our Berry curvature calculations predict a
positive value of the anomalous Hall conductivity of
+76 S/cm at $−1.7\%$ strain, whereas it is found to be
negative (−156 S/cm) at $−0.47\%$ strain. We attribute
the found behavior of the anomalous Hall effect to the nodal
point dynamics in the electronic structure arising in
response to tailoring the oxygen octahedral distortion
driven by the substrate induced strain. We also calculate
strain-mediated anomalous Hall conductivity as a function of
reduced magnetization obtained by scaling down the magnitude
of the exchange field inside Ru atoms finding good
qualitative agreement with experimental observations, which
indicates a strong impact of longitudinal thermal
fluctuations of Ru spin moments on the anomalous Hall effect
in this system.},
cin = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
$I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
pnm = {521 - Quantum Materials (POF4-521) / Interface Stabilized
Skyrmions in oxide structures for skyrmionics from first
principles $(jpgi11_20191101)$},
pid = {G:(DE-HGF)POF4-521 / $G:(DE-Juel1)jpgi11_20191101$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000630440500002},
doi = {10.1063/5.0043742},
url = {https://juser.fz-juelich.de/record/890966},
}