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@ARTICLE{Jugovac:866485,
      author       = {Jugovac, Matteo and Genuzio, Francesca and Gonzalez Lazo,
                      Eduardo and Stojić, Nataša and Zamborlini, Giovanni and
                      Feyer, Vitaliy and Menteş, Tevfik Onur and Locatelli,
                      Andrea and Schneider, Claus Michael},
      title        = {{R}ole of carbon dissolution and recondensation in graphene
                      epitaxial alignment on cobalt},
      journal      = {Carbon},
      volume       = {152},
      issn         = {0008-6223},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2019-05587},
      pages        = {489 - 496},
      year         = {2019},
      abstract     = {The crystalline quality of the graphene lattice is a
                      crucial parameter that not only rules the electronic and
                      transport properties of the carbon film, but also its
                      interaction with the substrate. Elucidating the effect of
                      different growth pathways on the resulting
                      graphene-substrate structural configurations and the
                      microscopic mechanisms for their formation is, therefore, a
                      goal of utmost importance. By using electron
                      spectro-microscopy with high chemical and structural
                      sensitivity, we image the structural transformation that
                      graphene on cobalt undergoes at temperatures above 500°C,
                      from a rotationally-incoherent, defective layer to a high
                      quality epitaxial one. We find that the transformation takes
                      place via the growth and propagation of mesoscopic carbidic
                      islands. We identify the underlying mechanism for the
                      formation of epitaxial graphene to involve the dissolution
                      and recondensation of carbon within these regions. The
                      activation energy of the process is estimated to be
                      1.84 ± 0.11 eV, indicating that the carbon detachment
                      is the rate-limiting step. With the aid of theoretical
                      calculations, we show that the martensitic phase transition
                      occurring in cobalt above 420°C does not affect the
                      graphene transformation. These findings help to establish
                      the optimal parameters to grow high-quality graphene
                      epilayers on Co, opening viable routes towards usage in
                      artificially fabricated magnetic heterostructures.},
      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:000483384900053},
      doi          = {10.1016/j.carbon.2019.06.033},
      url          = {https://juser.fz-juelich.de/record/866485},
}