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@ARTICLE{Li:861696,
      author       = {Li, Yu and Yin, Zhiping and Liu, Zhonghao and Wang, Weiyi
                      and Xu, Zhuang and Song, Yu and Tian, Long and Huang, Yaobo
                      and Shen, Dawei and Abernathy, D. L. and Niedziela, J. L.
                      and Ewings, R. A. and Perring, T. G. and Pajerowski, Daniel
                      M. and Matsuda, Masaaki and Bourges, Philippe and Mechthild,
                      Enderle and Su, Yixi and Dai, Pengcheng},
      title        = {{C}oexistence of {F}erromagnetic and {S}tripe
                      {A}ntiferromagnetic {S}pin {F}luctuations in
                      {S}r{C}o$_2${A}s$_2$},
      journal      = {Physical review letters},
      volume       = {122},
      number       = {11},
      issn         = {1079-7114},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2019-02129},
      pages        = {117204},
      year         = {2019},
      abstract     = {We use inelastic neutron scattering to study energy and
                      wave vector dependence of spin fluctuations in SrCo2As2,
                      derived from SrFe2−xCoxAs2 iron pnictide superconductors.
                      Our data reveal the coexistence of antiferromagnetic (AF)
                      and ferromagnetic (FM) spin fluctuations at wave vectors
                      QAF=(1,0) and QFM=(0,0)/(2,0), respectively. By comparing
                      neutron scattering results with those of dynamic mean field
                      theory calculation and angle-resolved photoemission
                      spectroscopy experiments, we conclude that both AF and FM
                      spin fluctuations in SrCo2As2 are closely associated with a
                      flatband of the eg orbitals near the Fermi level, different
                      from the t2g orbitals in superconducting SrFe2−xCoxAs2.
                      Therefore, Co substitution in SrFe2−xCoxAs2 induces a t2g
                      to eg orbital switching, and is responsible for FM spin
                      fluctuations detrimental to the singlet pairing
                      superconductivity.},
      cin          = {JCNS-FRM-II / JCNS-2},
      ddc          = {530},
      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)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:30951336},
      UT           = {WOS:000461923000010},
      doi          = {10.1103/PhysRevLett.122.117204},
      url          = {https://juser.fz-juelich.de/record/861696},
}