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@ARTICLE{Lin:859718,
      author       = {Lin, S.-C. and Kuo, C.-T. and Comes, R. B. and Rault, J. E.
                      and Rueff, J.-P. and Nemsak, Slavomir and Taleb, A. and
                      Kortright, J. B. and Meyer-Ilse, J. and Gullikson, E. and
                      Sushko, P. V. and Spurgeon, S. R. and Gehlmann, M. and
                      Bowden, M. E. and Plucinski, L. and Chambers, S. A. and
                      Fadley, C. S.},
      title        = {{I}nterface properties and built-in potential profile of a
                      {L}a{C}r {O} 3 / {S}r{T}i {O} 3 superlattice determined by
                      standing-wave excited photoemission spectroscopy},
      journal      = {Physical review / B},
      volume       = {98},
      number       = {16},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2019-00555},
      pages        = {165124},
      year         = {2018},
      abstract     = {LaCrO3(LCO)/SrTiO3(STO) heterojunctions are intriguing due
                      to a polar discontinuity along [001], exhibiting two
                      distinct and controllable charged interface structures
                      [(LaO)+/(TiO2)0 and (SrO)0/(CrO2)−] with induced
                      polarization, and a resulting depth-dependent potential. In
                      this study, we have used soft- and hard-x-ray standing-wave
                      excited photoemission spectroscopy (SW-XPS) to
                      quantitatively determine the elemental depth profile,
                      interface properties, and depth distribution of the
                      polarization-induced built-in potentials. We observe an
                      alternating charged interface configuration: a positively
                      charged (LaO)+/(TiO2)0 intermediate layer at the
                      LCOtop/STObottom interface and a negatively charged
                      (SrO)0/(CrO2)− intermediate layer at the STOtop/LCObottom
                      interface. Using core-level SW data, we have determined the
                      depth distribution of species, including through the
                      interfaces, and these results are in excellent agreement
                      with scanning transmission electron microscopy and electron
                      energy-loss spectroscopy mapping of local structure and
                      composition. SW-XPS also enabled deconvolution of the LCO
                      and STO contributions to the valence-band (VB) spectra.
                      Using a two-step analytical approach involving first
                      SW-induced core-level binding-energy shifts and then VB
                      modeling, the variation in potential across the complete
                      superlattice is determined in detail. This potential is in
                      excellent agreement with density functional theory models,
                      confirming this method as a generally useful tool for
                      interface studies.},
      cin          = {PGI-6},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-6-20110106},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000447302700007},
      doi          = {10.1103/PhysRevB.98.165124},
      url          = {https://juser.fz-juelich.de/record/859718},
}