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@ARTICLE{Bouhassoune:172845,
      author       = {Bouhassoune, Mohammed and Zimmermann, Bernd and
                      Mavropoulos, Phivos and Wortmann, Daniel and Dederichs,
                      Peter H. and Blügel, Stefan and Lounis, Samir},
      title        = {{Q}uantum well states and amplified spin-dependent
                      {F}riedel oscillations in thin films},
      journal      = {Nature Communications},
      volume       = {5},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2014-06279},
      pages        = {5558},
      year         = {2014},
      abstract     = {Electrons mediate many of the interactions between atoms in
                      a solid. Their propagation in a material determines its
                      thermal, electrical, optical, magnetic and transport
                      properties. Therefore, the constant energy contours
                      characterizing the electrons, in particular the Fermi
                      surface, have a prime impact on the behaviour of materials.
                      If anisotropic, the contours induce strong directional
                      dependence at the nanoscale in the Friedel oscillations
                      surrounding impurities. Here we report on giant anisotropic
                      charge density oscillations focused along specific
                      directions with strong spin-filtering after scattering at an
                      oxygen impurity embedded in the surface of a ferromagnetic
                      thin film of ​Fe grown on ​W(001). Utilizing density
                      functional theory, we demonstrate that by changing the
                      thickness of the ​Fe films, we control quantum well states
                      confined to two dimensions that manifest as multiple flat
                      energy contours, impinging and tuning the strength of the
                      induced charge oscillations which allow to detect the oxygen
                      impurity at large distances (≈50 nm).},
      cin          = {IAS-1 / PGI-1 / PGI-2},
      ddc          = {500},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      I:(DE-Juel1)PGI-2-20110106},
      pnm          = {424 - Exploratory materials and phenomena (POF2-424)},
      pid          = {G:(DE-HGF)POF2-424},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000345913700003},
      pubmed       = {pmid:25424343},
      doi          = {10.1038/ncomms6558},
      url          = {https://juser.fz-juelich.de/record/172845},
}