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@ARTICLE{Demirdi:827711,
      author       = {Demirdiş, S. and van der Beek, C. J. and Mühlbauer, S.
                      and Su, Y. and Wolf, Th},
      title        = {{SANS} study of vortex lattice structural transition in
                      optimally doped ({B}a$_{1−
                      x}${K}$_{x}$){F}e$_{2}${A}s$_{2}$},
      journal      = {Journal of physics / Condensed matter},
      volume       = {28},
      number       = {42},
      issn         = {1361-648X},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2017-01819},
      pages        = {425701 -},
      year         = {2016},
      abstract     = {Small-angle neutron scattering on high quality single
                      crystalline Ba1−x K x Fe2As2 reveals the transition from a
                      low-field vortex solid phase with orientational order to a
                      vortex polycrystal at high magnetic field. The vortex
                      order–disorder transition is correlated with the
                      second-peak feature in isothermal hysteresis loops, and is
                      interpreted in terms of the generation of supplementary
                      vortex solid dislocations. The sharp drop of the structure
                      factor above the second peak field is explained by the
                      dynamics of freezing of the vortex ensemble in the high
                      field phase.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {144 - Controlling Collective States (POF3-144) / 6213 -
                      Materials and Processes for Energy and Transport
                      Technologies (POF3-621) / 6G15 - FRM II / MLZ (POF3-6G15) /
                      6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-6213 /
                      G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)SANS-1-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000383990700001},
      pubmed       = {pmid:27541966},
      doi          = {10.1088/0953-8984/28/42/425701},
      url          = {https://juser.fz-juelich.de/record/827711},
}