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@ARTICLE{Kerber:888657,
      author       = {Kerber, Nico and Ksenzov, Dmitriy and Freimuth, Frank and
                      Capotondi, Flavio and Pedersoli, Emanuele and Lopez-Quintas,
                      Ignacio and Seng, Boris and Cramer, Joel and Litzius, Kai
                      and Lacour, Daniel and Zabel, Hartmut and Mokrousov, Yuriy
                      and Kläui, Mathias and Gutt, Christian},
      title        = {{F}aster chiral versus collinear magnetic order recovery
                      after optical excitation revealed by femtosecond {XUV}
                      scattering},
      journal      = {Nature Communications},
      volume       = {11},
      number       = {1},
      issn         = {2041-1723},
      address      = {[London]},
      publisher    = {Nature Publishing Group UK},
      reportid     = {FZJ-2020-05099},
      pages        = {6304},
      year         = {2020},
      abstract     = {While chiral spin structures stabilized by
                      Dzyaloshinskii-Moriya interaction (DMI) are candidates as
                      novel information carriers, their dynamics on the fs-ps
                      timescale is little known. Since with the bulk Heisenberg
                      exchange and the interfacial DMI two distinct exchange
                      mechanisms are at play, the ultrafast dynamics of the chiral
                      order needs to be ascertained and compared to the dynamics
                      of the conventional collinear order. Using an XUV
                      free-electron laser we determine the fs-ps temporal
                      evolution of the chiral order in domain walls in a magnetic
                      thin film sample by an IR pump - X-ray magnetic scattering
                      probe experiment. Upon demagnetization we observe that the
                      dichroic (CL-CR) signal connected with the chiral order
                      correlator mzmx in the domain walls recovers significantly
                      faster than the (CL + CR) sum signal representing the
                      average collinear domain magnetization mz2 + mx2. We
                      explore possible explanations based on spin structure
                      dynamics and reduced transversal magnetization fluctuations
                      inside the domain walls and find that the latter can explain
                      the experimental data leading to different dynamics for
                      collinear magnetic order and chiral magnetic order.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
      ddc          = {500},
      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) /
                      Topological transport in real materials from ab initio
                      $(jiff40_20190501)$},
      pid          = {G:(DE-HGF)POF3-142 / $G:(DE-Juel1)jiff40_20190501$},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {33298908},
      UT           = {WOS:000600148800005},
      doi          = {10.1038/s41467-020-19613-z},
      url          = {https://juser.fz-juelich.de/record/888657},
}