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@ARTICLE{Ghosh:907112,
author = {Ghosh, Sumit and Freimuth, Frank and Gomonay, Olena and
Blügel, Stefan and Mokrousov, Yuriy},
title = {{D}riving spin chirality by electron dynamics in
laser-excited antiferromagnets},
journal = {Communications Physics},
volume = {5},
number = {1},
issn = {2399-3650},
address = {London},
publisher = {Springer Nature},
reportid = {FZJ-2022-01843},
pages = {69},
year = {2022},
abstract = {Despite recent successes in the area of ultrafast
manipulation of magnetic order, optical generation and
manipulation of complex spin textures is hindered by an
insufficient theoretical understanding of underlying
processes. In particular an important aspect of subtle
connection between the electronic and magnetic degrees of
freedom is not properly accounted for in existing theories.
Here, we uncover a distinct physical mechanism for
imprinting spin chirality into collinear magnets with short
laser pulses. By simultaneously treating the laser-ignited
evolution of electronic structure and magnetic order, we
show that their intertwined dynamics can result in an
emergence of quasi-stable chiral states. We find that
laser-driven chirality does not require any auxiliary
external fields or intrinsic spin–orbit interaction to
exist, and it can survive on the time scale of nanoseconds
even in the presence of thermal fluctuations, which makes
the uncovered mechanism relevant for understanding various
optical experiments on magnetic materials. Our findings
provide a more detailed perspective of the complex
interactions which occur between chiral magnetism and
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 = {5211 - Topological Matter (POF4-521)},
pid = {G:(DE-HGF)POF4-5211},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000773257500001},
doi = {10.1038/s42005-022-00840-3},
url = {https://juser.fz-juelich.de/record/907112},
}