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@ARTICLE{Guo:49698,
      author       = {Guo, X. and Zhang, Z. and Sigle, W. and Waser, R.},
      title        = {{S}chottky barrier formed by network of screw dislocations
                      in {S}r{T}i{O}3},
      journal      = {Applied physics letters},
      volume       = {87},
      issn         = {0003-6951},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {PreJuSER-49698},
      pages        = {162105},
      year         = {2005},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {A network of screw dislocations was artificially created in
                      SrTiO3, and characterized by transmission electron
                      microscopy (TEM). Slight expansion of the dislocation core
                      was observed by TEM. The composition of the dislocation core
                      was quantified by electron energy loss spectroscopy, which
                      reveals a 13 +/- $5\%$ Ti/O ratio increase but no Sr/Ti
                      ratio change in the core, demonstrating an oxygen deficiency
                      or oxygen vacancy surplus in the dislocation core. The
                      vacancy surplus was estimated to be about one vacancy every
                      unit cell along the core. The dislocation core is positively
                      charged; therefore, oxygen vacancies and holes are expelled
                      from the dislocation network, forming a double Schottky
                      barrier, which blocks charge carrier transports across the
                      network. The Schottky barrier height at T=823 K and P-O2=2
                      Pa was determined to be similar to 0.48 V. (C) 2005 American
                      Institute of Physics.},
      keywords     = {J (WoSType)},
      cin          = {IFF-IEM},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB321},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK242},
      shelfmark    = {Physics, Applied},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000232557900036},
      doi          = {10.1063/1.2112202},
      url          = {https://juser.fz-juelich.de/record/49698},
}