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@ARTICLE{Steffens:15572,
      author       = {Steffens, P. and Friedt, O. and Sidis, Y. and Link, P. and
                      Kulda, J. and Schmalzl, K. and Nakatsuji, S. and Braden, M.},
      title        = {{M}agnetic excitations in the metallic single-layer
                      ruthenates {C}a2-x{S}rx{R}u{O}4 studied by inelastic neutron
                      scattering},
      journal      = {Physical review / B},
      volume       = {83},
      number       = {5},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-15572},
      pages        = {054429},
      year         = {2011},
      note         = {This work was supported by the Deutsche
                      Forschungsgemeinschaft through SFB 608.},
      abstract     = {By inelastic neutron scattering, we have analyzed the
                      magnetic correlations in the paramagnetic metallic region of
                      the series Ca2-xSrxRuO4, 0.2 <= x <= 0.62. We find different
                      contributions that correspond to two-dimensional
                      ferromagnetic fluctuations and to fluctuations at
                      incommensurate wave vectors Q(1)(IC) = (0.11,0,0), Q(2)(IC)
                      = (0.26,0,0), and Q(alpha beta)(IC) = (0.3,0.3,0). These
                      components constitute the measured response as a function of
                      the Sr concentration x, of the magnetic field, and of the
                      temperature. A generic model is applicable to metallic
                      Ca2-xSrxRuO4 close to the Mott transition, in spite of their
                      strongly varying physical properties. The amplitude,
                      characteristic energy, and width of the incommensurate
                      components vary only slightly as functions of x, but the
                      ferromagnetic component depends sensitively on
                      concentration, temperature, and magnetic field. While
                      ferromagnetic fluctuations are very strong in
                      Ca1.38Sr0.62RuO4 with a low characteristic energy of 0.2 meV
                      at T = 1.5 K, they are strongly suppressed in
                      Ca1.8Sr0.2RuO4, but reappear upon the application of a
                      magnetic field, and form a magnon mode above the
                      metamagnetic transition. The inelastic neutron scattering
                      results document how the competition between ferromagnetic
                      and incommensurate antiferromagnetic instabilities governs
                      the physics of this system.},
      keywords     = {J (WoSType)},
      cin          = {JARA-FIT / JCNS-2 / PGI-4},
      ddc          = {530},
      cid          = {$I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-2-20110106 /
                      I:(DE-Juel1)PGI-4-20110106},
      pnm          = {Grundlagen für zukünftige Informationstechnologien /
                      Großgeräte für die Forschung mit Photonen, Neutronen und
                      Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK412 / G:(DE-Juel1)FUEK415},
      experiment   = {EXP:(DE-MLZ)PANDA-20140101},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000287712100005},
      doi          = {10.1103/PhysRevB.83.054429},
      url          = {https://juser.fz-juelich.de/record/15572},
}