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@ARTICLE{Stadtmller:826072,
      author       = {Stadtmüller, Benjamin and Haag, Norman and Seidel,
                      Johannes and van Straaten, Gerben and Franke, Markus and
                      Kumpf, Christian and Cinchetti, Mirko and Aeschlimann,
                      Martin},
      title        = {{A}dsorption heights and bonding strength of organic
                      molecules on a {P}b-{A}g surface alloy},
      journal      = {Physical review / B},
      volume       = {94},
      number       = {23},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2017-00332},
      pages        = {235436},
      year         = {2016},
      abstract     = {The understanding of the fundamental geometric and
                      electronic properties of metal-organic hybrid interfaces is
                      a key issue on the way to improving the performance of
                      organic electronic and spintronic devices. Here, we studied
                      the adsorption heights of copper-II-phthalocyanine (CuPc)
                      and 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) on
                      a Pb1Ag2 surface alloy on Ag(111) using the normal-incidence
                      x-ray standing waves technique. We find a significantly
                      larger adsorption height of both molecules on the Pb-Ag
                      surface alloy compared to the bare Ag(111) surface which is
                      caused by the larger size of Pb. This increased adsorption
                      height suppresses the partial chemical interaction of both
                      molecules with Ag surface atoms. Instead, CuPc and PTCDA
                      molecules bond only to the Pb atoms with different
                      interaction strength ranging from a van der Waals–like
                      interaction for CuPc to a weak chemical interaction with
                      additional local bonds for PTCDA. The different adsorption
                      heights for CuPc and PTCDA on Pb1Ag2 are the result of local
                      site-specific molecule-surface bonds mediated by functional
                      molecular groups and the different charge donating and
                      accepting character of CuPc and PTCDA.},
      cin          = {PGI-3 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-3-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {142 - Controlling Spin-Based Phenomena (POF3-142)},
      pid          = {G:(DE-HGF)POF3-142},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000391010200009},
      doi          = {10.1103/PhysRevB.94.235436},
      url          = {https://juser.fz-juelich.de/record/826072},
}