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@ARTICLE{Tam:864386,
      author       = {Tam, David W. and Lai, Hsin-Hua and Hu, Jin and Lu, Xingye
                      and Walker, H. C. and Abernathy, D. L. and Niedziela, J. L.
                      and Weber, Tobias and Enderle, M. and Su, Yixi and Mao, Z.
                      Q. and Si, Qimiao and Dai, Pengcheng},
      title        = {{P}laquette instability competing with bicollinear ground
                      state in detwinned {F}e{T}e},
      journal      = {Physical review / B},
      volume       = {100},
      number       = {5},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2019-04178},
      pages        = {054405},
      year         = {2019},
      abstract     = {We use inelastic neutron scattering to show that long-range
                      spin waves arising from the static bicollinear
                      antiferromagnetic (AF) order in FeTe, which have twofold
                      rotational symmetry in a fully detwinned crystal, rapidly
                      dissolve above E≈26meV into ridges of scattering with
                      fourfold rotational symmetry and a nearly isotropic magnetic
                      fluctuation spectrum. With increasing temperature above
                      TN≈68K, the twofold spin waves change into broad regions
                      of scattering with fourfold symmetry. Since the scattering
                      patterns from plaquette magnetic order generated within a
                      bilinear biquadratic Hamiltonian have fourfold rotational
                      symmetry consistent with the high-energy, spin-isotropic
                      spin waves of FeTe, we conclude that the bicollinear AF
                      state in FeTe is quasidegenerate with plaquette magnetic
                      order, providing evidence of the strongly frustrated nature
                      of the local moments in the iron chalcogenide family of
                      iron-based superconductors.},
      cin          = {JCNS-FRM-II},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218},
      pnm          = {524 - Controlling Collective States (POF3-524) / 6212 -
                      Quantum Condensed Matter: Magnetism, Superconductivity
                      (POF3-621) / 6G4 - Jülich Centre for Neutron Research
                      (JCNS) (POF3-623) / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-524 / G:(DE-HGF)POF3-6212 /
                      G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000478991000002},
      doi          = {10.1103/PhysRevB.100.054405},
      url          = {https://juser.fz-juelich.de/record/864386},
}