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@ARTICLE{Prajapat:861839,
      author       = {Prajapat, C. L. and Singh, Surendra and Bhattacharya, D.
                      and Ravikumar, G. and Basu, S. and Mattauch, S. and Zheng,
                      Jian-Guo and Aoki, T. and Paul, Amitesh},
      title        = {{P}roximity effects across oxide-interfaces of
                      superconductor-insulator-ferromagnet hybrid heterostructure},
      journal      = {Scientific reports},
      volume       = {8},
      number       = {1},
      issn         = {2045-2322},
      address      = {[London]},
      publisher    = {Macmillan Publishers Limited, part of Springer Nature},
      reportid     = {FZJ-2019-02266},
      pages        = {3732},
      year         = {2018},
      abstract     = {A case study of electron tunneling or
                      charge-transfer-driven orbital ordering in superconductor
                      (SC)-ferromagnet (FM) interfaces has been conducted in
                      heteroepitaxial YBa2Cu3O7(YBCO)/La0.67Sr0.33MnO3(LSMO)
                      multilayers interleaved with and without an insulating
                      SrTiO3(STO) layer between YBCO and LSMO. X-ray magnetic
                      circular dichroism experiments revealed anti-parallel
                      alignment of Mn magnetic moments and induced Cu magnetic
                      moments in a YBCO/LSMO multilayer. As compared to an
                      isolated LSMO layer, the YBCO/LSMO multilayer displayed a
                      $(50\%)$ weaker Mn magnetic signal, which is related to the
                      usual proximity effect. It was a surprise that a similar
                      proximity effect was also observed in a YBCO/STO/LSMO
                      multilayer, however, the Mn signal was reduced by $20\%.$
                      This reduced magnetic moment of Mn was further verified by
                      depth sensitive polarized neutron reflectivity. Electron
                      energy loss spectroscopy experiment showed the evidence of
                      Ti magnetic polarization at the interfaces of the
                      YBCO/STO/LSMO multilayer. This crossover magnetization is
                      due to a transfer of interface electrons that migrate from
                      Ti(4+)−δ to Mn at the STO/LSMO interface and to Cu2+ at
                      the STO/YBCO interface, with hybridization via O 2p
                      orbitals. So charge-transfer driven orbital ordering is the
                      mechanism responsible for the observed proximity effect and
                      Mn-Cu anti-parallel coupling in YBCO/STO/LSMO. This work
                      provides an effective pathway in understanding the aspect of
                      long range proximity effect and consequent orbital
                      degeneracy parameter in magnetic coupling.},
      cin          = {JCNS-FRM-II / JCNS-2},
      ddc          = {600},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)MARIA-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29487317},
      UT           = {WOS:000426151800065},
      doi          = {10.1038/s41598-018-22036-y},
      url          = {https://juser.fz-juelich.de/record/861839},
}