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@ARTICLE{Chen:868049,
      author       = {Chen, Tong and Chen, Youzhe and Kreisel, Andreas and Lu,
                      Xingye and Schneidewind, Astrid and Qiu, Yiming and Park, J.
                      T. and Perring, Toby G. and Stewart, J Ross and Cao, Huibo
                      and Zhang, Rui and Li, Yu and Rong, Yan and Wei, Yuan and
                      Andersen, Brian M. and Hirschfeld, P. J. and Broholm, Collin
                      and Dai, Pengcheng},
      title        = {{A}nisotropic spin fluctuations in detwinned {F}e{S}e},
      journal      = {Nature materials},
      volume       = {18},
      number       = {7},
      issn         = {1476-4660},
      address      = {Basingstoke},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2019-06642},
      pages        = {709 - 716},
      year         = {2019},
      abstract     = {Superconductivity in FeSe emerges from a nematic phase that
                      breaks four-fold rotational symmetry in the iron plane. This
                      phase may arise from orbital ordering, spin fluctuations or
                      hidden magnetic quadrupolar order. Here we use inelastic
                      neutron scattering on a mosaic of single crystals of FeSe,
                      detwinned by mounting on a BaFe2As2 substrate to demonstrate
                      that spin excitations are most intense at the
                      antiferromagnetic wave vectors QAF = (±1, 0) at low
                      energies E = 6–11 meV in the normal state. This
                      two-fold (C2) anisotropy is reduced at lower energies,
                      3–5 meV, indicating a gapped four-fold (C4) mode. In the
                      superconducting state, however, the strong nematic
                      anisotropy is again reflected in the spin resonance
                      (E = 3.6 meV) at QAF with incommensurate scattering
                      around 5–6 meV. Our results highlight the extreme
                      electronic anisotropy of the nematic phase of FeSe and are
                      consistent with a highly anisotropic superconducting gap
                      driven by spin fluctuations.},
      cin          = {JCNS-FRM-II / MLZ},
      ddc          = {610},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6212 - Quantum Condensed
                      Matter: Magnetism, Superconductivity (POF3-621) / 6G4 -
                      Jülich Centre for Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6212 /
                      G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)PANDA-20140101 / EXP:(DE-MLZ)PUMA-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31110345},
      UT           = {WOS:000472020800016},
      doi          = {10.1038/s41563-019-0369-5},
      url          = {https://juser.fz-juelich.de/record/868049},
}