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@ARTICLE{Jugovac:888206,
      author       = {Jugovac, Matteo and Genuzio, Francesca and Menteş, Tevfik
                      Onur and Locatelli, Andrea and Zamborlini, Giovanni and
                      Feyer, Vitaliy and Schneider, Claus Michael},
      title        = {{T}unable coupling by means of oxygen intercalation and
                      removal at the strongly interacting graphene/cobalt
                      interface},
      journal      = {Carbon},
      volume       = {163},
      issn         = {0008-6223},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-04760},
      pages        = {341 - 347},
      year         = {2020},
      abstract     = {It is well known that intercalated species can strongly
                      affect the graphene-substrate interaction. As repeatedly
                      shown by experiment and theory, the intercalation of atomic
                      species may establish a free-standing character in
                      chemisorbed graphene systems. Here, we focus on graphene
                      grown on a strongly interacting support, cobalt, and
                      demonstrate that the film electronic structure and doping
                      can be tuned via the intercalation/removal of interfacial
                      oxygen. Importantly, cathode lens microscopy reveals the
                      main mechanism of oxygen intercalation, and in particular
                      how microscopic openings in the mesh enable oxygen
                      accumulation at the graphene-cobalt interface. Our
                      experiments show that this process can be carefully
                      controlled through temperature, without affecting the film
                      morphology and crystalline quality. The presence of oxygen
                      at the interface induces an upward shift of the graphene π
                      band, moving its crossing above the Fermi level, accompanied
                      by an increased Fermi velocity and reduced momentum width.
                      Control on the graphene coupling to cobalt may enable one to
                      alter the induced spin polarization in graphene’s
                      electronic states.},
      cin          = {PGI-6},
      ddc          = {540},
      cid          = {I:(DE-Juel1)PGI-6-20110106},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000536475900009},
      doi          = {10.1016/j.carbon.2020.03.034},
      url          = {https://juser.fz-juelich.de/record/888206},
}