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@ARTICLE{Rodenbcher:847981,
      author       = {Rodenbücher, Christian and Wrana, D. and Meuffels, P. and
                      Rogala, M. and Krok, F. and Szot, K.},
      title        = {{E}lectrical nanopatterning of {T}i{O} 2 single crystal
                      surfaces in situ via local resistance and potential
                      switching},
      journal      = {APL materials},
      volume       = {6},
      number       = {6},
      issn         = {2166-532X},
      address      = {Melville, NY},
      publisher    = {AIP Publ.},
      reportid     = {FZJ-2018-03289},
      pages        = {066105 -},
      year         = {2018},
      abstract     = {The resistive switching effect in transition metal oxides
                      allows for a dedicated manipulation of the oxide resistance
                      via electrical stimuli. Here, we perform local-conductivity
                      atomic force microscopy simultaneously with the Kelvin probe
                      force microscopy under ultra-high vacuum conditions using
                      the very same tip investigating the very same sample area to
                      monitor the surface conductivity and surface potential of
                      thermally reduced TiO2 single crystals. We show that the
                      resistance of confined surface areas can be switched by
                      applying a voltage of several volts to the tip during
                      scanning in the contact mode. By conducting in situ
                      oxidation experiments, we present that this surface
                      switching is related to a local redox reaction, which can be
                      controlled electrically allowing for surface nanopatterning
                      and illustrates the capability of transition metal oxides
                      for multilevel resistive switching being a prerequisite for
                      neuromorphic computing. We discuss that the features of the
                      electrically engraved nanopattern can be scaled down to a
                      lower boundary at several tens of nanometers. The observed
                      limit around 25 nm is determined by the presence of
                      intrinsic local variations in electrical surface properties
                      appearing as a common phenomenon of slightly reduced metal
                      oxide surfaces.},
      cin          = {PGI-7 / JARA-FIT / IEK-3},
      ddc          = {620},
      cid          = {I:(DE-Juel1)PGI-7-20110106 / $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)IEK-3-20101013},
      pnm          = {524 - Controlling Collective States (POF3-524)},
      pid          = {G:(DE-HGF)POF3-524},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000436859000007},
      doi          = {10.1063/1.5028424},
      url          = {https://juser.fz-juelich.de/record/847981},
}