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@ARTICLE{Li:9413,
      author       = {Li, H.-F. and Su, Y. and Chatterji, T. and Nefedov, A. and
                      Persson, J. and Meuffels, P. and Xiao, Y. and Vaknin, D. and
                      Brückel, T.},
      title        = {{S}oft x-ray resonant scattering study of single-crystal
                      {L}a{S}r2{M}n2{O}7},
      journal      = {The European physical journal / B},
      volume       = {74},
      issn         = {1434-6028},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-9413},
      pages        = {457 - 461},
      year         = {2010},
      note         = {We are grateful for the excellent technical support from
                      BESSY-II, Germany. This work was partially supported by the
                      BMBF under contract No. O3ZA6BC2.},
      abstract     = {Soft X-ray resonant scattering studies at the Mn L-II,L-
                      III- and the La M-IV,M- V- edges of single-crystal
                      LaSr2Mn2O7 are reported. At low temperatures, below T-N a
                      parts per thousand 160 K, energy scans with a fixed momentum
                      transfer at the A-type antiferromagnetic (0 0 1) reflection
                      around the Mn L-II,L- III-edges with incident linear sigma
                      and pi polarizations show strong resonant enhancements. The
                      splitting of the energy spectra around the Mn L-II,L-
                      III-edges may indicate the presence of a mixed valence
                      state, e.g., Mn3+/Mn4+. The relative intensities of the
                      resonance and the clear shoulder-feature as well as the
                      strong incident sigma and pi polarization dependences
                      strongly indicate its complex electronic origin. Unexpected
                      enhancement of the charge Bragg (0 0 2) reflection at the La
                      M-IV,M- V-edges with sigma polarization has been observed up
                      to 300 K, with an anomaly appearing around the
                      orbital-ordering transition temperature, T-OO a parts per
                      thousand 220 K, suggesting a strong coupling (competition)
                      between them.},
      keywords     = {J (WoSType)},
      cin          = {IFF-4 / IFF-5 / JARA-FIT / Jülich Centre for Neutron
                      Science JCNS (JCNS) ; JCNS / IFF-6},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB784 / I:(DE-Juel1)VDB785 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-20121112 /
                      I:(DE-Juel1)VDB786},
      pnm          = {BioSoft: Makromolekulare Systeme und biologische
                      Informationsverarbeitung / Großgeräte für die Forschung
                      mit Photonen, Neutronen und Ionen (PNI)},
      pid          = {G:(DE-Juel1)FUEK505 / G:(DE-Juel1)FUEK415},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000276900000005},
      doi          = {10.1140/epjb/e2010-00117-3},
      url          = {https://juser.fz-juelich.de/record/9413},
}