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@ARTICLE{Song:819535,
      author       = {Song, Yu and Van Dyke, John and Lum, I. K. and White, B. D.
                      and Jang, Sooyoung and Yazici, Duygu and Shu, L. and
                      Schneidewind, Astrid and Čermák, Petr and Qiu, Y. and
                      Maple, M. B. and Morr, Dirk K. and Dai, Pengcheng},
      title        = {{R}obust upward dispersion of the neutron spin resonance in
                      the heavy fermion superconductor {C}e1−x{Y}bx{C}o{I}n5},
      journal      = {Nature Communications},
      volume       = {7},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2016-05178},
      pages        = {12774 -},
      year         = {2016},
      abstract     = {The neutron spin resonance is a collective magnetic
                      excitation that appears in theunconventional copper oxide,
                      iron pnictide and heavy fermion superconductors. Althoughthe
                      resonance is commonly associated with a spin-exciton due to
                      the d(s±)-wave symmetryof the superconducting order
                      parameter, it has also been proposed to be amagnon-like
                      excitation appearing in the superconducting state. Here we
                      use inelastic neutronscattering to demonstrate that the
                      resonance in the heavy fermion superconductorCe1-xYbxCoIn5
                      with x=0, 0.05 and 0.3 has a ring-like upward dispersion
                      that is robustagainst Yb-doping. By comparing our
                      experimental data with a random phase
                      approximationcalculation using the electronic structure and
                      the momentum dependence of the d(x2 -y2)-wavesuperconducting
                      gap determined from scanning tunnelling microscopy (STM) for
                      CeCoIn5,we conclude that the robust upward-dispersing
                      resonance mode in Ce1-xYbxCoIn5 isinconsistent with the
                      downward dispersion predicted within the spin-exciton
                      scenario.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {500},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)PANDA-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000385256500004},
      pubmed       = {pmid:27677397},
      doi          = {10.1038/ncomms12774},
      url          = {https://juser.fz-juelich.de/record/819535},
}