% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Shen:874252,
      author       = {Shen, Shoudong and Zhang, Xiaowen and Wo, Hongliang and
                      Shen, Yao and Feng, Yu and Schneidewind, A. and Čermák, P.
                      and Wang, Wenbin and Zhao, Jun},
      title        = {{N}eutron {S}pin {R}esonance in the {H}eavily
                      {H}ole-{D}oped {KF}e 2 {A}s 2 {S}uperconductor},
      journal      = {Physical review letters},
      volume       = {124},
      number       = {1},
      issn         = {1079-7114},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2020-01343},
      pages        = {017001},
      year         = {2020},
      abstract     = {We report high-resolution neutron scattering measurements
                      of the low energy spin fluctuations ofKFe2As2, the end
                      member of the hole-doped Ba1−xKxFe2As2family with only
                      hole pockets, above andbelow its superconducting transition
                      temperatureTc(∼3.5K). Our data reveal clear spin
                      fluctuations at theincommensurate wave vector (0.5δ,0,L),
                      (δ¼0.2) (1-Fe unit cell), which exhibitL-modulationpeaking
                      atL¼0.5. Upon cooling to the superconducting state, the
                      incommensurate spin fluctuationsgradually open a spin gap
                      and form a sharp spin resonance mode. The incommensurability
                      (2δ¼0.4)ofthe resonance mode (∼1.2meV) is considerably
                      larger than the previously reported value
                      (2δ≈0.32)athigher energies (≥∼6meV). The
                      determination of the momentum structure of spin fluctuation
                      in the lowenergy limit allows a direct comparison with the
                      realistic Fermi surface and superconducting gap
                      structure.Our results point to ans-wave pairing with a
                      reversed sign between the hole pockets near the zone center
                      inKFe2As2.},
      cin          = {JCNS-FRM-II / JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {6212 - Quantum Condensed Matter: Magnetism,
                      Superconductivity (POF3-621) / 6G15 - FRM II / MLZ
                      (POF3-6G15) / 6G4 - Jülich Centre for Neutron Research
                      (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6G15 /
                      G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)PANDA-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31976731},
      UT           = {WOS:000505496400003},
      doi          = {10.1103/PhysRevLett.124.017001},
      url          = {https://juser.fz-juelich.de/record/874252},
}