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@ARTICLE{Beltramo:57108,
      author       = {Beltramo, G. L. and Ibach, H. and Müller, J. E. and
                      Giesen, M.},
      title        = {{A} {N}ovel {A}pproach to {M}easure the {S}tep {L}ine
                      {T}ension and the {S}tep {D}ipole {M}oment on {V}icinal
                      {A}u(001) {E}lectrodes},
      journal      = {Surface science},
      volume       = {601},
      issn         = {0039-6028},
      address      = {Amsterdam},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-57108},
      pages        = {1876 - 1885},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {In this paper we introduce a new experimental approach to
                      determine the potential dependence of the step line tension
                      on metal electrodes in contact with an electrolyte: (0 0 1)
                      and (1 1 n) surfaces of single crystal gold electrodes were
                      investigated by impedance spectroscopy in solutions
                      containing weakly adsorbing anions, such as CIO4-, F- and
                      SO42-. Within the limits of error the shift in the potential
                      of zero charge is proportional to the step density of the
                      vicinal surfaces indicative of a well-defined dipole moment
                      per step length. The dipole moments per step atom are 6.8
                      +/- 0.8, 5.2 +/- 0.4, 5.8 +/- 0.5 x 10(-3) e angstrom for
                      SO42-, ClO4-, and F- containing electrolytes, respectively.
                      Using the values for the pzc and the potential dependence of
                      the capacitance curves, the potential dependence of the
                      surface tension of the vicinal surfaces is determined. The
                      line tension of the steps is then calculated from the
                      difference between the surface tension of the stepped and
                      the step free surface. Our results represent the first
                      experimental confirmation of a recent theoretical model
                      proposing that in absence of specifically adsorbed ions the
                      step line tension should decrease (roughly linear) with
                      potential. (c) 2007 Elsevier B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {IBN-4 / IBN-3 / JARA-FIT},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB802 / I:(DE-Juel1)VDB801 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Chemistry, Physical / Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000246313900014},
      doi          = {10.1016/j.susc.2007.02.012},
      url          = {https://juser.fz-juelich.de/record/57108},
}