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@ARTICLE{Geranton:810697,
author = {Geranton, Guillaume and Zimmermann, Bernd and Long, Nguyen
H. and Mavropoulos, Phivos and Blügel, Stefan and Freimuth,
Frank and Mokrousov, Yuriy},
title = {{S}pin-orbit torques and spin accumulation in {F}e{P}t/{P}t
and {C}o/{C}u thin films from first principles: {T}he role
of impuritiesra},
journal = {Physical review / B},
volume = {93},
number = {22},
issn = {2469-9950},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2016-03294},
pages = {224420},
year = {2016},
abstract = {Using the Boltzmann formalism based on the first principles
electronic structure and scattering rates, we investigate
the current-induced spin accumulation and spin-orbit torques
in FePt/Pt and Co/Cu bilayers in the presence of
substitutional impurities. In FePt/Pt bilayers we consider
the effect of intermixing of Fe and Pt atoms in the FePt
layer and find a crucial dependence of spin accumulation and
spin-orbit torques on the details of the distribution of
these defects. In Co/Cu bilayers we predict that the
magnitude and sign of the spin-orbit torque and spin
accumulation depend very sensitively on the type of the
impurities used to dope the Cu substrate. Moreover,
simultaneously with impurity-driven scattering, we consider
the effect of an additional constant quasiparticle
broadening of the states at the Fermi surface to simulate
phonon scattering at room temperature and discover that even
a small broadening of the order of 25 meV can drastically
influence the magnitude of the considered effects. We
explain our findings based on the analysis of the complex
interplay of several competing Fermi surface contributions
to the spin accumulation and spin-orbit torques in these
structurally and chemically nonuniform systems.},
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 = {142 - Controlling Spin-Based Phenomena (POF3-142) / 143 -
Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000378104600002},
doi = {10.1103/PhysRevB.93.224420},
url = {https://juser.fz-juelich.de/record/810697},
}