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@ARTICLE{Su:58665,
      author       = {Su, G.J. and Aguilar-Sanchez, R. and Li, Z. and Pobelov, I.
                      and Homberger, M. and Simon, U. and Wandlowski, Th.},
      title        = {{S}canning {T}unneling {M}icroscopy and {S}pectroscopy
                      {S}tudies of w-(4'-methyl-biphenyl-4-yl) alkanthiols on
                      {A}u(111)-(1x1) {E}lectrodes},
      journal      = {ChemPhysChem},
      volume       = {8},
      issn         = {1439-4235},
      address      = {Weinheim},
      publisher    = {Wiley-VCH Verl.},
      reportid     = {PreJuSER-58665},
      pages        = {1037},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {4-methyl-4'-(n-mercaptoalkyl)biphenyl
                      (CH3-C6H4-C6H4-(CH2)n-SH, n=3-6, BPn) monolayers assembled
                      on Au(111)-(1x1) in 1,3,5,-trimethylbenzene (TMB) at various
                      temperatures are studied by scanning tunneling microscopy
                      (STM) and scanning tunneling spectroscopy (STS). High
                      resolution STM images reveal that BP3 and BP5 form a (sqrt
                      3x2sqrt 3) repeating motif superimposed on a
                      temperature-dependent Moire pattern. BP4 and BP6 adlayers
                      are characterized by a coexisting (2sqrt 3x5sqrt 3) majority
                      phase and a temperature-dependent (3xpsqrt 3) minority
                      phase. Assembly at 60 degrees C or 90 degrees C leads to
                      p=5. Compression of the adlayer was found at higher
                      temperatures. Combined with high-resolution structure
                      experiments, the electronic characteristics of BP3 and BP4
                      self-assembled monolayers (SAMs) were studied by monitoring
                      current-distance (iT-Deltaz) and current-voltage (iT-Ebias)
                      characteristics in TMB employing a gold STM
                      tip|BPn|Au(111)-(1x1) configuration. The semilogarithmic
                      (iT-Deltaz) plots yielded three linear regions in the range
                      10 pA<or=iT<or=20 microA, which were attributed to the
                      different positions of the STM tip with respect to the
                      molecular adlayer (I outside, II in contact with and/or
                      within the adlayer, and III just before the formation of
                      Au-Au nanocontacts). The effective decay constants kappaeff
                      and the corresponding barrier heights phi(eff) decrease with
                      decreasing tip-substrate distance. The iT-Ebias curves at
                      low bias voltages are represented by the Simmons tunneling
                      model. Based on measurements in the high current limit, the
                      electric field strength of the dielectric breakdown was
                      estimated to range between |0.85+/-0.05|x10(9) V m-1 and
                      |1.5+/-0.1|x10(9) V m-1.},
      keywords     = {J (WoSType)},
      cin          = {IBN-3 / CNI / JARA-FIT},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB801 / I:(DE-Juel1)VDB381 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Chemistry, Physical / Physics, Atomic, Molecular $\&$
                      Chemical},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17476662},
      UT           = {WOS:000246646900010},
      doi          = {10.1002/cphc.200600781},
      url          = {https://juser.fz-juelich.de/record/58665},
}