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@ARTICLE{Freeman:827438,
      author       = {Freeman, P. G. and Giblin, S. R. and Hradil, K. and Mole,
                      R. A. and Cermak, P. and Prabhakaran, D.},
      title        = {{M}agnetic excitations of the charge stripe electrons below
                      half doping in {L}a$_{2−x}${S}r$_x${N}i{O}$_4$ ($x$ =
                      0.45, 0.4)},
      journal      = {Physical review / B},
      volume       = {95},
      number       = {6},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2017-01566},
      pages        = {064403},
      year         = {2017},
      note         = {Magnetism and basic research related},
      abstract     = {The low energy magnetic excitation spectrum of charge
                      stripe ordered La2-xSrxNiO4, x=0.4 and x=0.45 samples, were
                      studied by neutron scattering. Two excitation modes are
                      observed in both materials, one from the ordered magnetic
                      moments, and a second mode consistent with
                      pseudo-one-dimensional antiferromagnetic excitations of the
                      charge stripe electrons (q-1D). The dispersion of the q-1D
                      excitation follows the same relation as in x=1/3
                      composition, with even spectral weight in the two
                      counterpropagating branches of the x=0.4 sample, however in
                      the x=0.45 sample only one dispersion branch has any
                      measurable spectral weight. The evolution of the q-1D
                      excitations on doping to the checkerboard charge ordered
                      phase is discussed.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; 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)PANDA-20140101 / EXP:(DE-MLZ)PUMA-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000396095500004},
      doi          = {10.1103/PhysRevB.95.064403},
      url          = {https://juser.fz-juelich.de/record/827438},
}