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@ARTICLE{Xu:818259,
      author       = {Xu, Chencheng and Bäumer, Christoph and Heinen, Ronja
                      Anika and Hoffmann-Eifert, Susanne and Gunkel, Felix and
                      Dittmann, Regina},
      title        = {{D}isentanglement of growth dynamic and thermodynamic
                      effects in {L}a{A}l{O}$_{3}$/{S}r{T}i{O}$_{3}$
                      heterostructures},
      journal      = {Scientific reports},
      volume       = {6},
      issn         = {2045-2322},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2016-04733},
      pages        = {22410},
      year         = {2016},
      abstract     = {The influence of non-equilibrium and equilibrium processes
                      during growth of LaAlO3/SrTiO3 (LAO/STO) heterostructures is
                      analyzed. We investigate the electronic properties of
                      LAO/STO heterostructures obtained at constant growth
                      conditions after annealing in different oxygen atmospheres
                      within the typical growth window (1 × 10−4
                      mbar –1 × 10−2 mbar). The variation of annealing
                      conditions is found to cause a similar change of electronic
                      properties as observed for samples grown in different oxygen
                      pressure. The results indicate that equilibrium defect
                      formation is the dominant process for establishing the
                      properties of the two-dimensional electron gas (2DEG), while
                      growth dynamics play a minor role in the typical LAO/STO
                      growth regime. Furthermore, the effects of non-equilibrium
                      processes occurring during growth are investigated in detail
                      by quenching just-grown LAO/STO heterostructures directly
                      after growth. We show that during growth the sample is
                      pushed into a non-equilibrium state. After growth, the
                      sample then relaxes towards equilibrium, while the
                      relaxation rate strongly depends on the ambient pressure.
                      The observed relaxation behavior is mainly associated with a
                      reoxidation of the STO bulk, while the 2DEG is formed
                      immediately after the growth.},
      cin          = {PGI-7},
      ddc          = {000},
      cid          = {I:(DE-Juel1)PGI-7-20110106},
      pnm          = {521 - Controlling Electron Charge-Based Phenomena
                      (POF3-521)},
      pid          = {G:(DE-HGF)POF3-521},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000372694600001},
      doi          = {10.1038/srep22410},
      url          = {https://juser.fz-juelich.de/record/818259},
}