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@ARTICLE{Pavarini:3491,
      author       = {Pavarini, E. and Koch, E. and Lichtenstein, A. I.},
      title        = {{M}echanism for {O}rbital {O}rdering in {KC}u{F}3},
      journal      = {Physical review letters},
      volume       = {101},
      issn         = {0031-9007},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-3491},
      pages        = {266405},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The Mott insulating perovskite KCuF3 is considered the
                      archetype of an orbitally ordered system. By using the
                      local-density approximation+dynamical mean-field theory
                      method, we investigate the mechanism for orbital ordering in
                      this material. We show that the purely electronic
                      Kugel-Khomskii superexchange mechanism alone leads to a
                      remarkably large transition temperature of T-KK similar to
                      350 K. However, orbital order is experimentally believed to
                      persist to at least 800 K. Thus, Jahn-Teller distortions are
                      essential for stabilizing orbital order at such high
                      temperatures.},
      keywords     = {J (WoSType)},
      cin          = {IAS-1 / IFF-1 / JARA-FIT / IAS-3 / IFF-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)VDB781 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)IAS-3-20090406 /
                      I:(DE-Juel1)VDB783},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Physics, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000262247100057},
      doi          = {10.1103/PhysRevLett.101.266405},
      url          = {https://juser.fz-juelich.de/record/3491},
}