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@ARTICLE{Ishida:12049,
      author       = {Ishida, H. and Liebsch, A.},
      title        = {{F}ermi-liquid, non-{F}ermi-liquid, and {M}ott phases in
                      iron pnictides and cuprates},
      journal      = {Physical review / B},
      volume       = {81},
      number       = {5},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-12049},
      pages        = {054513},
      year         = {2010},
      note         = {A. L. would like to thank Igor Mazin, Luca de' Medici, and
                      Massimo Capone for comments. The work of H. I. is supported
                      by the Grant-in-Aid for Scientific Research (Grant No.
                      20540191) and by the Nihon University Strategic Projects for
                      Academic Research. A.L.'s calculations were carried out on
                      the Julich Jump computer.},
      abstract     = {The role of Coulomb correlations in the iron pnictide
                      LaFeAsO is studied by generalizing exact diagonalization
                      dynamical mean-field theory to five orbitals. For
                      rotationally invariant Hund's rule coupling a transition
                      from a paramagnetic Fermi-liquid phase to a non-Fermi-liquid
                      metallic phase exhibiting frozen moments is found at
                      moderate Coulomb energies. For Ising-like exchange, this
                      transition occurs at a considerably lower critical Coulomb
                      energy. The correlation-induced scattering rate as a
                      function of doping relative to half filling, i.e., delta=n/5
                      - 1, where n=6 for the undoped material, is shown to be
                      qualitatively similar to the one in the two-dimensional
                      single-band Hubbard model which is commonly used to study
                      strong correlations in high-T-c cuprates. In this scenario,
                      the parent Mott insulator of LaFeAsO is the half-filled n=5
                      limit, while the undoped n=6 material corresponds to the
                      critical doping region delta(c) approximate to 0.2 in the
                      cuprates, on the verge between the Fermi-liquid phase of the
                      overdoped region and the non-Fermi-liquid pseudogap phase in
                      the underdoped region.},
      keywords     = {J (WoSType)},
      cin          = {IFF-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB781},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000274998000110},
      doi          = {10.1103/PhysRevB.81.054513},
      url          = {https://juser.fz-juelich.de/record/12049},
}