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@ARTICLE{Thoma:903705,
      author       = {Thoma, Henrik and Hutanu, Vladimir and Dutta, Rajesh and
                      Gukasov, Arsen and Kocsis, Vilmos and Tokunaga, Yusuke and
                      Taguchi, Yasujiro and Tokura, Yoshinori and Kezsmarki,
                      Istvan and Roth, Georg and Angst, Manuel},
      title        = {{M}agnetic order and sign of the {D}zyaloshinskii-{M}oriya
                      interaction in 2{D} antiferromagnet {B}a2{C}o{G}e2{O}7 under
                      applied magnetic field},
      journal      = {IEEE transactions on magnetics},
      volume       = {58},
      number       = {2},
      issn         = {0018-9464},
      address      = {New York, NY},
      publisher    = {IEEE},
      reportid     = {FZJ-2021-05347},
      pages        = {6400305},
      year         = {2022},
      abstract     = {The Dzyaloshinskii-Moriya interaction (DMI), that is the
                      antisymmetric part of the exchange coupling tensor, favors
                      the perpendicular arrangement of magnetic moment, thus,
                      induces canting in otherwise collinear structures. The DMI
                      is the prerequisite for the emergence of weak ferromagnetism
                      in antiferromagnets, but can stabilize twisted magnetic
                      textures, such as spin spirals, soliton lattices and
                      magnetic skyrmions. While the magnitude of the DMI
                      determines the canting angle of adjacent spins, its sign
                      dictates the sense of the spin rotation. Based on a focused
                      polarized neutron diffraction (PND) study, combined with
                      symmetry analysis, we determine the sign of the DMI in the
                      unconventional multiferroic Ba2CoGe2O7 and reveal its
                      detailed magnetic structure in magnetic fields applied in
                      the tetragonal plane. As PND gives unique access to the
                      scattering contribution from the phase-sensitive
                      nuclear-magnetic interference, it is a valuable tool for a
                      straightforward DMI sign determination in bulk materials and
                      allows to disclose even very weak magnetic moments.
                      Remarkably, the sign of the DMI could be determined from the
                      PND measurement of a single reflection which is demonstrated
                      to be reliable for a large range of applied magnetic field
                      directions and values.},
      cin          = {JCNS-FRM-II / JCNS-4 / JCNS-2 / JARA-FIT / MLZ / PGI-4},
      ddc          = {620},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-4-20201012 / I:(DE-Juel1)JCNS-2-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)PGI-4-20110106},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000745538100190},
      doi          = {10.1109/TMAG.2021.3082983},
      url          = {https://juser.fz-juelich.de/record/903705},
}