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@ARTICLE{Krger:16362,
      author       = {Kröger, I. and Stadtmüller, B. and Kleimann, C. and
                      Rajput, P. and Kumpf, C.},
      title        = {{N}ormal-incidence x-ray standing-wave study of copper
                      phthalocyanine submonolayers on {C}u(111) and {A}u(111)},
      journal      = {Physical review / B},
      volume       = {83},
      number       = {19},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-16362},
      pages        = {195414},
      year         = {2011},
      note         = {We would like to thank the ESRF and their staff members
                      Yanyu Mi, Blanka Detlefs, and Jorg Zegenhagen for enabling
                      the NIXSW experiments and their permanent support during the
                      beamtime. We also acknowledge Patrick Bayersdorfer and
                      Giuseppe Mercurio for their help, as well as Marc Haming,
                      Johannes Ziroff, and Christoph Stadler for stimulating
                      discussions. This work was supported by the Deutsche
                      Forschungsgemeinschaft (KU 1531/2-1).},
      abstract     = {Understanding the adsorption and growth mechanisms of large
                      pi-conjugated molecules on noblemetal surfaces is a crucial
                      aspect for designing and optimizing electronic devices based
                      on organic materials. The investigation of adsorption
                      heights for these molecules on different surfaces can be a
                      direct measure for the strength of the adsorbate-substrate
                      interaction, and gives insight into the fundamental bonding
                      mechanisms. However, the adsorption strength is often also
                      influenced by intermolecular (lateral) interactions which
                      cause, e. g., island formation in the submonolayer regime
                      and influence the adsorption geometry of individual
                      molecules. The lateral structure can then dominate the
                      vertical structure formation and influence the
                      adsorbate-substrate interaction. In this context, the
                      adsorption of copper-phthalocyanines on noble metal surfaces
                      [Au(111), Ag(111), and Cu(111)] represents an ideal model
                      system since the lateral structure formation, as well as the
                      molecular adsorption geometries, strongly depend on coverage
                      and temperature, and hence can be tuned easily. We
                      demonstrate that for CuPc/Au(111), a system dominated by
                      physisorption, the adsorption height of the molecules is
                      independent from the lateral adsorption geometry. In
                      contrast, a strong chemisorption of CuPc on Cu(111) shows a
                      clear gradient in the interaction strength: Individual
                      molecules in diluted phases are significantly stronger
                      bonded than molecules in dense phases. This finding
                      quantifies the increase of the exchange correlation in the
                      binding process, which goes along with the tendency to a
                      more site-specific adsorption geometry at small coverages.},
      keywords     = {J (WoSType)},
      cin          = {PGI-3 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-3-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000290307700005},
      doi          = {10.1103/PhysRevB.83.195414},
      url          = {https://juser.fz-juelich.de/record/16362},
}