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@ARTICLE{Heo:811322,
author = {Heo, Changhoon and Kiselev, Nikolai and Nandy, Ashis Kumar
and Blügel, Stefan and Rasing, Theo},
title = {{S}witching of chiral magnetic skyrmions by picosecond
magnetic field pulses via transient topological states},
journal = {Scientific reports},
volume = {6},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2016-03810},
pages = {27146},
year = {2016},
abstract = {Magnetic chiral skyrmions are vortex like spin structures
that appear as stable or meta-stable states in magnetic
materials due to the interplay between the symmetric and
antisymmetric exchange interactions, applied magnetic field
and/or uniaxial anisotropy. Their small size and internal
stability make them prospective objects for data storage but
for this, the controlled switching between skyrmion states
of opposite polarity and topological charge is essential.
Here we present a study of magnetic skyrmion switching by an
applied magnetic field pulse based on a discrete model of
classical spins and atomistic spin dynamics. We found a
finite range of coupling parameters corresponding to the
coexistence of two degenerate isolated skyrmions
characterized by mutually inverted spin structures with
opposite polarity and topological charge. We demonstrate how
for a wide range of material parameters a short inclined
magnetic field pulse can initiate the reliable switching
between these states at GHz rates. Detailed analysis of the
switching mechanism revealed the complex path of the system
accompanied with the excitation of a chiral-achiral meron
pair and the formation of an achiral skyrmion.},
cin = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
ddc = {000},
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:000377334800001},
pubmed = {pmid:27273157},
doi = {10.1038/srep27146},
url = {https://juser.fz-juelich.de/record/811322},
}