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@INPROCEEDINGS{Hardtdegen:826463,
      author       = {Hardtdegen, Alexander and La Torre, Camilla and Zhang, Hehe
                      and Funck, Carsten and Menzel, Stephan and Waser, Rainer and
                      Hoffmann-Eifert, Susanne},
      title        = {{I}nternal {C}ell {R}esistance as the {O}rigin of {A}brupt
                      {R}eset {B}ehavior in {H}f{O}2-{B}ased {D}evices
                      {D}etermined from {C}urrent {C}ompliance {S}eries},
      reportid     = {FZJ-2017-00688},
      year         = {2016},
      abstract     = {The resistive switching behavior in different HfO2/TiO2
                      nano crossbar structures of 100 x 100 nm2 size is analyzed
                      by means of DC voltage sweeps. The devices fabricated from 3
                      nm thin ALD layers of HfO2 and TiO2 sandwiched between Pt
                      and Hf or Ti electrodes show VCM-type bipolar resistive
                      switching after electroforming. For increased compliance
                      current (cc) during set from 50 μA to 800 μA, the set
                      current runs into self- limitation while the reset behavior
                      changes from gradual to abrupt. A model is defined with an
                      internal resistance being in series with the local resistive
                      switch. A recursive algorithm is applied to the cc series
                      for calculation of the series resistor and evaluation of the
                      intrinsic switching characteristic of HfO2-based cells. The
                      intrinsic LRS turns out to be current compliance controlled
                      and to follow the universal switching rule. Supported by
                      compact modelling, we show that an abrupt reset behavior
                      might arise even for materials with a gradual intrinsic
                      reset characteristic in consequence of an internal series
                      resistor.},
      month         = {May},
      date          = {2016-05-15},
      organization  = {2016 IEEE International Memory
                       Workshop (IMW), Paris (France), 15 May
                       2016 - 18 May 2016},
      subtyp        = {Other},
      cin          = {PGI-7 / PGI-10 / JARA-FIT},
      cid          = {I:(DE-Juel1)PGI-7-20110106 / I:(DE-Juel1)PGI-10-20170113 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {524 - Controlling Collective States (POF3-524)},
      pid          = {G:(DE-HGF)POF3-524},
      typ          = {PUB:(DE-HGF)6},
      doi          = {10.1109/IMW.2016.7495280},
      url          = {https://juser.fz-juelich.de/record/826463},
}