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@ARTICLE{Mi:877689,
      author       = {Mi, Shao-Bo and Yao, Tian and Cheng, Shao-Dong and Faley,
                      Micheal I. and Poppe, Ulrich and Lu, Lu and Wang, Dawei and
                      Jia, Chun-Lin},
      title        = {{A}tomic-scale imaging of interfacial polarization in
                      cuprate-titanate heterostructures},
      journal      = {Applied physics letters},
      volume       = {116},
      number       = {25},
      issn         = {1077-3118},
      address      = {Melville, NY},
      publisher    = {American Inst. of Physics},
      reportid     = {FZJ-2020-02399},
      pages        = {251603 -},
      year         = {2020},
      abstract     = {The interfaces in oxide heterostructures that bring novel
                      physical phenomena and functionalities have attracted great
                      attention in fundamental research and device applications.
                      For uncovering structure–property relationships of oxide
                      heterostructures, direct evidence of the atomic-scale
                      structure of heterointerfaces is highly desired. Here, we
                      report on studying the structure of interfaces between
                      YBa2Cu3O7-δ thin films and SrTiO3 substrates by means of
                      aberration-corrected ultrahigh-resolution electron
                      microscopy. Employing advanced imaging and spectroscopic
                      techniques, shifts of atoms at the interface away from the
                      regular lattice sites are measured, leading to the
                      interfacial polarity. The local polarization induced by the
                      atomic shifts directs toward the cuprate films and is
                      estimated to be about 36.1 μC/cm2. The observed
                      interfacial polar layer is understood by the special atomic
                      configuration across the interface, which could modulate the
                      electrical properties in superconducting devices that are
                      based on the ferroelectric/superconductor heterosystems.},
      cin          = {PGI-5 / ER-C-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {144 - Controlling Collective States (POF3-144)},
      pid          = {G:(DE-HGF)POF3-144},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000545791400001},
      doi          = {10.1063/5.0011081},
      url          = {https://juser.fz-juelich.de/record/877689},
}