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@ARTICLE{He:1007492,
      author       = {He, Zheng and Wang, Qisi and Feng, Yu and Kim, Chul and
                      Kyung, Wonshik and Kim, Changyoung and Wo, Hongliang and
                      Ding, Gaofeng and Hao, Yiqing and Liu, Feiyang and Walker,
                      Helen C. and Adroja, Devashibhai T. and Schneidewind, Astrid
                      and Wang, Wenbin and Zhao, Jun},
      title        = {{S}pin fluctuations in {S}r 1.8 {L}a 0.2 {R}u{O} 4},
      journal      = {Physical review / B},
      volume       = {107},
      number       = {20},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2023-02082},
      pages        = {L201107},
      year         = {2023},
      abstract     = {We use inelastic neutron scattering to study spin
                      fluctuations in Sr1.8La0.2RuO4, where Lanthanum doping
                      triggers a Lifshitz transition by pushing the van Hove
                      singularity in the γ band to the Fermi energy. Strong
                      spinfluctuations emerge at an incommensurate wave vector Qic
                      = (0.3, 0.3), corresponding to the nesting vector between α
                      and β Fermi sheets. The incommensurate antiferromagnetic
                      fluctuations shift toward (0.25,0.25) with increasing energy
                      up to ∼110 meV. By contrast, scatterings near the
                      ferromagnetic wave vectors Q = (1, 0) and (1,1) remain
                      featureless at all energies. This contradicts the
                      weak-coupling perspective that suggests a sharpenhancement
                      of ferromagnetic susceptibility due to the divergence of
                      density of states in the associated γ band. Our findings
                      imply that ferromagnetic fluctuations in Sr2RuO4 and related
                      materials do not fit into the weakcoupling paradigm, but
                      instead are quasilocal fluctuations induced by Hund’s
                      coupling. This imposes significant constraints for the
                      pairing mechanism involving spin fluctuations.},
      cin          = {JCNS-FRM-II / MLZ / JCNS-2 / JCNS-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)JCNS-4-20201012},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)PANDA-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000993596700003},
      doi          = {10.1103/PhysRevB.107.L201107},
      url          = {https://juser.fz-juelich.de/record/1007492},
}