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@ARTICLE{Decker:156053,
      author       = {Decker, R. and Bazarnik, M. and Atodiresei, N. and Caciuc,
                      V. and Blügel, S. and Wiesendanger, R.},
      title        = {{L}ocal tunnel magnetoresistance of an iron intercalated
                      graphene-based heterostructure},
      journal      = {Journal of physics / Condensed matter},
      volume       = {26},
      number       = {39},
      issn         = {1361-648X},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2014-04948},
      pages        = {394004},
      year         = {2014},
      abstract     = {The lateral variation of the tunnel magnetoresistance (TMR)
                      of a graphene-based vertical heterostructure is studied by
                      spin-polarized scanning tunneling microscopy (SP–STM)
                      using an Fe-coated probe tip. The well-defined
                      heterostructure is obtained by the intercalation of a
                      magnetic Fe monolayer at the graphene/Ir(1 1 1)
                      interface. Its structure is characterized by a moiré
                      pattern with a high corrugation. In contrast to the Fe /
                      Ir(1 1 1) surface, graphene/Fe / Ir(1 1 1) exhibits
                      ferromagnetic order with an out-of-plane easy magnetization
                      axis. At the nanometer scale, our experiments reveal that
                      the moiré pattern induces a lateral variation of the TMR,
                      which reaches $80\%.$ The measured TMR at valleys of the
                      moiré pattern is higher than at hills. We interpret this
                      modulation in terms of a different hybridization between
                      graphene and Fe at valleys and hills due to a different
                      graphene–Fe distance at these sites, which leads to a
                      different transmission of spin-polarized states},
      cin          = {IAS-1 / PGI-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
      pnm          = {422 - Spin-based and quantum information (POF2-422)},
      pid          = {G:(DE-HGF)POF2-422},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000343313400006},
      doi          = {10.1088/0953-8984/26/39/394004},
      url          = {https://juser.fz-juelich.de/record/156053},
}