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@ARTICLE{Krivenkov:837710,
      author       = {Krivenkov, M. and Golias, E. and Marchenko, D. and
                      Sánchez-Barriga, J. and Bihlmayer, G. and Rader, O. and
                      Varykhalov, A.},
      title        = {{N}anostructural origin of giant {R}ashba effect in
                      intercalated graphene},
      journal      = {2D Materials},
      volume       = {4},
      number       = {3},
      issn         = {2053-1583},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2017-06570},
      pages        = {035010},
      year         = {2017},
      abstract     = {To enhance the spin–orbit interaction in graphene by a
                      proximity effect without compromising the
                      quasi-free-standing dispersion of the Dirac cones means
                      balancing the opposing demands for strong and weak
                      graphene–substrate interaction. So far, only the
                      intercalation of Au under graphene/Ni(1 1 1) has proven
                      successful, which was unexpected since graphene prefers a
                      large separation (~$3.3~{\mathring{\rm A}}$ ) from a Au
                      monolayer in equilibrium. Here, we investigate this system
                      and find the solution in a nanoscale effect. We reveal that
                      the Au largely intercalates as nanoclusters. Our density
                      functional theory calculations show that the graphene is
                      periodically stapled to the Ni substrate, and this
                      attraction presses graphene and Au nanoclusters together.
                      This, in turn, causes a Rashba effect of the giant magnitude
                      observed in experiment. Our findings show that
                      nanopatterning of the substrate can be efficiently used for
                      engineering of spin–orbit effects in graphene.},
      cin          = {PGI-1 / IAS-1 / JARA-FIT / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406 /
                      $I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000406018600001},
      doi          = {10.1088/2053-1583/aa7ad8},
      url          = {https://juser.fz-juelich.de/record/837710},
}