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@ARTICLE{Marchewka:189414,
      author       = {Marchewka, Astrid and Cooper, David and Lenser, Christian
                      and Menzel, Stephan and Du, Hongchu and Dittmann, Regina and
                      Dunin-Borkowski, Rafal and Waser, R.},
      title        = {{D}etermination of the electrostatic potential distribution
                      in {P}t/{F}e:{S}r{T}i{O}$_{3}$/{N}b:{S}r{T}i{O}$_{3}$
                      thin-film structures by electron holography},
      journal      = {Scientific reports},
      volume       = {4},
      issn         = {2045-2322},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2015-02581},
      pages        = {6975},
      year         = {2014},
      abstract     = {We determined the electrostatic potential distribution in
                      pristine Pt/Fe:SrTiO3/Nb:SrTiO3 structures by electron
                      holography experiments, revealing the existence of a
                      depletion layer extending into the Nb-doped bottom
                      electrode. Simulations of potential profiles in
                      metal-insulator-metal structures were conducted assuming
                      different types and distributions of dopants. It is found
                      that the presence of acceptor-type dopant concentrations at
                      the Fe:SrTiO3/Nb:SrTiO3 interface with a donor-doped
                      insulating layer provides a good match to the measured
                      profile. Such acceptor-type interface concentrations may be
                      associated with Sr vacancies on the Nb:SrTiO3 side of the
                      bottom interface.},
      cin          = {PGI-5 / PGI-7},
      ddc          = {000},
      cid          = {I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)PGI-7-20110106},
      pnm          = {42G - Peter Grünberg-Centre (PG-C) (POF2-42G41)},
      pid          = {G:(DE-HGF)POF2-42G41},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000344759200002},
      doi          = {10.1038/srep06975},
      url          = {https://juser.fz-juelich.de/record/189414},
}