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@ARTICLE{Ramadan:893704,
author = {Ramadan, Fatima Zahra and José dos Santos, Flaviano and
Drissi, Lalla Btissam and Lounis, Samir},
title = {{C}omplex magnetism of the two-dimensional
antiferromagnetic {G}e 2 {F}: from a {N}éel spin-texture to
a potential antiferromagnetic skyrmion},
journal = {RSC Advances},
volume = {11},
number = {15},
issn = {2046-2069},
address = {London},
publisher = {RSC Publishing},
reportid = {FZJ-2021-02776},
pages = {8654 - 8663},
year = {2021},
abstract = {Based on density functional theory combined with low-energy
models, we explore the magnetic properties of a hybrid
atomic-thick two-dimensional (2D) material made of germanene
doped with fluorine atoms in a half-fluorinated
configuration (Ge2F). The Fluorine atoms are highly
electronegative, which induces magnetism and breaks
inversion symmetry, triggering thereby a finite and strong
Dzyaloshinskii–Moriya interaction (DMI). The magnetic
exchange interactions are of antiferromagnetic nature among
the first, second and third neighbors, which leads to
magnetic frustration. The Néel state is found to be the
most stable state, with magnetic moments lying in the
surface plane. This results from the out-of-plane component
of the DMI vector, which seems to induce an effective
in-plane magnetic anisotropy. Upon application of a magnetic
field, spin-spirals and antiferromagnetic skyrmions can be
stabilized. We conjecture that this can be realized via
magnetic exchange fields induced by a magnetic substrate. To
complete our characterization, we computed the spin-wave
excitations and the resulting spectra, which could be probed
via electron energy loss spectroscopy, magneto-Raman
spectroscopy or scanning tunneling spectroscopy.},
cin = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
ddc = {540},
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:000623512700027},
doi = {10.1039/D0RA09678D},
url = {https://juser.fz-juelich.de/record/893704},
}