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@ARTICLE{Rosenberger:632249,
      author       = {Rosenberger, Paul and Darmawan, Andri and Fedchenko, Olena
                      and Tkach, Olena and Chernov, Serhii V. and Kutnyakhov,
                      Dmytro and Hoesch, Moritz and Scholz, Markus and Rossnagel,
                      Kai and Pentcheva, Rossitza and Schoenhense, Gerd and
                      Elmers, Hans-Joachim and Mueller, Martina},
      title        = {{S}pin polarization of the two-dimensional electron gas at
                      the {E}u{O}/{S}r{T}i{O}$_3$ (001) interface},
      journal      = {Physical review materials},
      volume       = {9},
      number       = {6},
      issn         = {2475-9953},
      address      = {College Park, MD},
      publisher    = {APS},
      reportid     = {PUBDB-2025-02175},
      pages        = {064401},
      year         = {2025},
      abstract     = {Spin-polarized two-dimensional electron gases (2DEGs) are
                      of particular interest for functional oxide electronics
                      applications. The redox-created 2DEG residing on the
                      strontium titanate, SrTiO3 (STO), side of a europium
                      monoxide (EuO)/SrTiO3 (001) interface is expected to be
                      significantly spin polarized due to the proximity to the
                      strong (7𝜇𝐵/𝑓.𝑢.) Heisenberg ferromagnet EuO. We
                      apply magnetic circular dichroism in the angular
                      distribution (MCDAD) of photoemitted electrons to
                      investigate whether and how the induced spin polarization of
                      the 2DEG depends on the dimensionality of the overlaying EuO
                      layer. The experimental data are complemented by density
                      functional theory calculations with a Hubbard 𝑈 term
                      (DFT+𝑈). We show that the EuO/STO interfacial 2DEG is
                      spin polarized even for ultrathin EuO overlayers, starting
                      at an EuO threshold thickness of only two monolayers.
                      Additional EuO monolayers even increase the induced magnetic
                      Ti moment and thus the spin polarization of the 2DEG. Our
                      results and the potential to enhance the magnetic order of
                      EuO by other proximity effects indicate that the
                      EuO/STO(001) interface is an ideal template for creating
                      (multi-)functional spin-polarized 2DEGs for application in
                      oxide electronics.},
      cin          = {DOOR ; HAS-User / FS-PET-D / FS-FLASH-O / FS-FLASH /
                      FS-SXQM},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-PET-D-20190712
                      / I:(DE-H253)FS-FLASH-O-20160930 /
                      I:(DE-H253)FS-FLASH-20140814 / I:(DE-H253)FS-SXQM-20190201},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / 6G3 - PETRA III (DESY) (POF4-6G3)},
      pid          = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G3},
      experiment   = {EXP:(DE-H253)P-P04-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1103/PhysRevMaterials.9.064401},
      url          = {https://bib-pubdb1.desy.de/record/632249},
}