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@ARTICLE{Waser:14012,
      author       = {Waser, R. and Dittmann, R. and Salinga, M. and Wuttig, M.},
      title        = {{T}he role of defects in resistively switching
                      chalcogenides},
      journal      = {International journal of materials research},
      volume       = {101},
      issn         = {1862-5282},
      address      = {München},
      publisher    = {Hanser},
      reportid     = {PreJuSER-14012},
      pages        = {182 - 198},
      year         = {2010},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {This overview describes the present Understanding of
                      resistive switching phenomena encountered in
                      chalcogenide-based cells which may be utilized in
                      energy-efficient nonvolatile memory devices and in
                      array-based logic applications. We introduce the basic
                      operation principle of the phase change mechanism, the
                      thermochemical mechanism, and the valence change mechanism
                      and we discuss the crucial role of structural defects in the
                      switching processes. We show how this role is determined by
                      the atomic Structure of the defects, the electronic defect
                      states, and/or the ion transport properties of the defects.
                      The electronic structure of the systems in different
                      resistance states is described in the light of the chemical
                      bonds involved. While for phase change alloys the interplay
                      of ionicity and hybridization in the crystalline and ill the
                      amorphous phase determine the resistances, the local redox
                      reaction at the site of extended defects, the change in the
                      oxygen stoichiometry. and the resulting change ill the
                      occupancy of relevant orbitals play the major role in
                      transition metal oxides which switch by the thermochemical
                      and the valence change mechanism. Phase transformations are
                      not only discussed for phase change alloys but also for
                      redox-related switching processes. The switching kinetics as
                      well as the ultimate scalability of switching cells are
                      related to structural defects in the materials.},
      keywords     = {J (WoSType)},
      cin          = {IFF-6 / JARA-FIT},
      ddc          = {670},
      cid          = {I:(DE-Juel1)VDB786 / $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Metallurgy $\&$ Metallurgical Engineering},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000275653100005},
      doi          = {10.3139/146.100276},
      url          = {https://juser.fz-juelich.de/record/14012},
}