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@ARTICLE{Freimuth:836633,
author = {Freimuth, Frank and Blügel, Stefan and Mokrousov, Yuriy},
title = {{R}elation of the {D}zyaloshinskii-{M}oriya interaction to
spin currents and to the spin-orbit field},
journal = {Physical review / B},
volume = {96},
number = {5},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2017-05706},
pages = {054403},
year = {2017},
abstract = {Starting from the general Berry phase theory of the
Dzyaloshinskii-Moriya interaction (DMI) we derive an
expression for the linear contribution of the spin-orbit
interaction (SOI). Thereby, we show analytically that at the
first order in SOI DMI is given by the ground-state spin
current. We verify this finding numerically by ab initio
calculations in Mn/W(001) and Co/Pt(111) magnetic bilayers.
We show that despite the strong SOI from the 5d heavy
metals, DMI is well-approximated by the first order in SOI,
while the ground-state spin current is not. We decompose the
SOI-linear contribution to DMI into two parts. One part has
a simple interpretation in terms of the Zeeman interaction
between the spin-orbit field and the spin misalignment that
electrons acquire in magnetically noncollinear textures.
This interpretation provides also an intuitive understanding
of the symmetry of DMI on the basis of the spin-orbit field
and it explains in a simple way why DMI and ground-state
spin currents are related. Moreover, we show that energy
currents driven by magnetization dynamics and associated to
DMI can be explained by counter-propagating spin currents
that carry energy due to their Zeeman interaction with the
spin-orbit field. Finally, we discuss options to modify DMI
by nonequilibrium spin currents excited by electric fields
or light.},
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) /
Magnetic Anisotropy of Metallic Layered Systems and
Nanostructures $(jiff13_20131101)$ / Topological transport
in real materials from ab initio $(jias12_20121101)$},
pid = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143 /
$G:(DE-Juel1)jiff13_20131101$ /
$G:(DE-Juel1)jias12_20121101$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000406750900004},
doi = {10.1103/PhysRevB.96.054403},
url = {https://juser.fz-juelich.de/record/836633},
}