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@ARTICLE{Beltramo:8081,
      author       = {Beltramo, G. L. and Giesen, M. and Ibach, H.},
      title        = {{A}nomalous {H}elmholtz-{C}apacitance on {S}tepped
                      {S}urfaces of {S}ilver and {G}old},
      journal      = {Electrochimica acta},
      volume       = {54},
      issn         = {0013-4686},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-8081},
      pages        = {4305 - 4311},
      year         = {2009},
      note         = {We thank Karina Morgenstern, University Hannover, for a
                      helpful exchange of ideas on the adsorption of water at
                      steps and for making STM images available to us prior to
                      publication. Inspiring discussions with Wolfgang Schmickler,
                      University Ulm, are also gratefully acknowledged. Udo Linke
                      has contributed significantly to this work by his careful
                      and innovative preparation of the crystal surfaces. The work
                      was partially supported by the Fond derChemischen Industrie
                      and the Deutsche Forschungsgemeinschaft.},
      abstract     = {We have studied the capacitance of the solid/electrolyte
                      interface on Ag(11n) and Au(11n) surfaces in KClO4 and HClO4
                      as function of the electrolyte concentration and the step
                      density. We find that the inner layer capacitance
                      (Helmholtz-capacitance) at the potential of (total) zero
                      charge is dramatically reduced on stepped surfaces. Standard
                      theories which describe the Helmholtz-capacitance by
                      properties of the liquid, a hard wall boundary condition and
                      the polarizability of the electron gas at the metal surface
                      fail to describe this behavior. We propose that the
                      different polarizability of water bonded to the surface need
                      be taken into account and attribute the reduced capacitance
                      at steps to the lower polarizability of water molecules
                      bonded to step edges. (C) 2009 Elsevier Ltd. All rights
                      reserved.},
      keywords     = {J (WoSType)},
      cin          = {IBN-3 / JARA-FIT / IBN-4},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB801 / $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)VDB802},
      pnm          = {Grundlagen für zukünftige Informationstechnologien /
                      Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK412 / G:(DE-Juel1)FUEK414},
      shelfmark    = {Electrochemistry},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000266826200004},
      doi          = {10.1016/j.electacta.2009.02.087},
      url          = {https://juser.fz-juelich.de/record/8081},
}