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@ARTICLE{Ishida:2330,
      author       = {Ishida, H. and Liebsch, A.},
      title        = {{O}rigin of metallicity of {L}a{T}i{O}3/{S}r{T}i{O}3
                      heterostructures},
      journal      = {Physical review / B},
      volume       = {77},
      number       = {11},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-2330},
      pages        = {115350},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {It is shown that LaTiO3, in superlattices with SrTiO3, is a
                      strongly correlated metal rather than a Mott insulator. The
                      tetragonal lattice geometry imposed by the SrTiO3 substrate
                      leads to an increase of the Ti 3dt(2g) bandwidth and a
                      reversal of the t(2g) crystal field relative to the
                      orthorhombic bulk geometry. Using dynamical mean field
                      theory based on finite-temperature multiband exact
                      diagonalization, we show that, as a result of these effects,
                      local Coulomb interactions are not strong enough to induce a
                      Mott transition in tetragonal LaTiO3. The experimentally
                      observed metallicity of LaTiO3/SrTiO3 heterostructures is
                      therefore caused not only by the interface but also by the
                      tetragonal geometry of the LaTiO3 layers.},
      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:000254542800146},
      doi          = {10.1103/PhysRevB.77.115350},
      url          = {https://juser.fz-juelich.de/record/2330},
}