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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},
}