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@ARTICLE{Paens:202604,
      author       = {Paßens, Michael and Waser, Rainer and Karthäuser, Silvia},
      title        = {{E}nhanced fullerene–{A}u(111) coupling in (2√3 ×
                      2√3){R}30° superstructures with intermolecular
                      interactions},
      journal      = {Beilstein journal of nanotechnology},
      volume       = {6},
      issn         = {2190-4286},
      address      = {Frankfurt, M.},
      publisher    = {Beilstein-Institut zur Förderung der Chemischen
                      Wissenschaften},
      reportid     = {FZJ-2015-04803},
      pages        = {1421 - 1431},
      year         = {2015},
      abstract     = {Disordered and uniform (2√3 × 2√3)R30°
                      superstructures of fullerenes on the Au(111) surface have
                      been studied using scanning tunneling microscopy and
                      spectroscopy. It is shown that the deposition and growth
                      process of a fullerene monolayer on the Au(111) surface
                      determine the resulting superstructure. The supply of
                      thermal energy is of importance for the activation of a Au
                      vacancy forming process and thus, one criterion for the
                      selection of the respective superstructure. However, here it
                      is depicted that a vacancy–adatom pair can be formed even
                      at room temperature. This latter process results in C60
                      molecules that appear slightly more bright in scanning
                      tunnelling microscopy images and are identified in
                      disordered (2√3 x 2√3)R30° superstructures based on a
                      detailed structure analysis. In addition, these slightly
                      more bright C60 molecules form uniform (2√3 x 2√3)R30°
                      superstructures, which exhibit intermolecular interactions,
                      likely mediated by Au adatoms. Thus, vacancy–adatom pairs
                      forming at room temperature directly affect the resulting
                      C60 superstructure. Differential conductivity spectra reveal
                      a lifting of the degeneracy of the LUMO and LUMO+1 orbitals
                      in the uniform (2√3 x 2√3)R30° superstructure and in
                      addition, hybrid fullerene–Au(111) surface states suggest
                      partly covalent interactions.},
      cin          = {PGI-7 / JARA-FIT},
      ddc          = {620},
      cid          = {I:(DE-Juel1)PGI-7-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {524 - Controlling Collective States (POF3-524)},
      pid          = {G:(DE-HGF)POF3-524},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000357017200001},
      doi          = {10.3762/bjnano.6.147},
      url          = {https://juser.fz-juelich.de/record/202604},
}