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@ARTICLE{Waer:837599,
      author       = {Waßer, F. and Lee, C. H. and Kihou, K. and Steffens, P.
                      and Schmalzl, K. and Qureshi, N. and Braden, M.},
      title        = {{A}nisotropic resonance modes emerging in an
                      antiferromagnetic superconducting state},
      journal      = {Scientific reports},
      volume       = {7},
      number       = {1},
      issn         = {2045-2322},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2017-06482},
      pages        = {10307},
      year         = {2017},
      abstract     = {Two strong arguments in favor of magnetically driven
                      unconventional superconductivity arise from the coexistence
                      and closeness of superconducting and magnetically ordered
                      phases on the one hand, and from the emergence of magnetic
                      spin-resonance modes at the superconducting transition on
                      the other hand. Combining these two arguments one may ask
                      about the nature of superconducting spin-resonance modes
                      occurring in an antiferromagnetic state. This problem can be
                      studied in underdoped BaFe2 As2, for which the local
                      coexistence of large moment antiferromagnetism and
                      superconductivity is well established by local probes.
                      However, polarized neutron scattering experiments are
                      required to identify the nature of the resonance modes. In
                      the normal state of Co underdoped BaFe2 As2 the
                      antiferromagnetic order results in broad magnetic gaps
                      opening in all three spin directions that are reminiscent of
                      the magnetic response in the parent compound. In the
                      superconducting state two distinct anisotropic resonance
                      excitations emerge, but in contrast to numerous studies on
                      optimum and over-doped BaFe2 As2 there is no isotropic
                      resonance excitation. The two anisotropic resonance modes
                      appearing within the antiferromagnetic phase are attributed
                      to a band selective superconducting state, in which
                      longitudinal magnetic excitations are gapped by
                      antiferromagnetic order with sizable moment.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ILL},
      ddc          = {000},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ILL-20110128},
      pnm          = {144 - Controlling Collective States (POF3-144) / 524 -
                      Controlling Collective States (POF3-524) / 6212 - Quantum
                      Condensed Matter: Magnetism, Superconductivity (POF3-621) /
                      6213 - Materials and Processes for Energy and Transport
                      Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
                      G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 /
                      G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-Juel1)ILL-IN12-20150421},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000408997700006},
      pubmed       = {pmid:28871098},
      doi          = {10.1038/s41598-017-10208-1},
      url          = {https://juser.fz-juelich.de/record/837599},
}