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@ARTICLE{Sarvestani:861459,
author = {Sarvestani, Esmaeel and Zhang, Gouren and Gorelov, Evgeny
and Pavarini, Eva},
title = {{E}ffective masses, lifetimes, and optical conductivity in
{S}r 2 {R}u{O} 4 and {S}r 3 {R}u 2 {O} 7 : {I}nterplay of
spin-orbit, crystal-field, and {C}oulomb tetragonal tensor
interactions},
journal = {Physical review / B},
volume = {97},
number = {8},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2019-01924},
pages = {085141},
year = {2018},
abstract = {By using the local-density approximation + dynamical
mean-field theory approach, we study the low-energy
electronic properties and the optical conductivity of the
layered ruthenates Sr2RuO4 and Sr3Ru2O7. We study the
interplay of spin-orbit, crystal-field, and Coulomb
interactions, including the tetragonal terms of the Coulomb
tensor. We show that the spin-orbit interaction is
multifaced; depending on the parameter regime, filling, and
temperature, it can either enhance or reduce the effective
strength of correlations. We compare the results based on
the two common approximations for the screened Coulomb
parameters, the constrained random-phase approximation
(cRPA) and the constrained local-density approximation. We
show that the experimental Drude peak is better reproduced
by the cRPA parameters, hinting to relatively small mass
renormalizations. We find that including the spin-orbit
interaction is, however, important, for a realistic
description. We show that Coulomb terms with tetragonal D4h
symmetry have a strong effect on the mass-enhancement
anisotropy, but they do not affect sizably the total
spectral function or the in-plane conductivity.},
cin = {IAS-3 / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)IAS-3-20090406 / $I:(DE-82)080012_20140620$},
pnm = {144 - Controlling Collective States (POF3-144) /
Spin-orbital order-disorder transitions in strongly
correlated systems $(jiff46_20161101)$ / Multiplet effects
in strongly correlated materials $(jiff41_20091101)$},
pid = {G:(DE-HGF)POF3-144 / $G:(DE-Juel1)jiff46_20161101$ /
$G:(DE-Juel1)jiff41_20091101$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000425603600006},
doi = {10.1103/PhysRevB.97.085141},
url = {https://juser.fz-juelich.de/record/861459},
}