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@ARTICLE{Ikonomov:57110,
      author       = {Ikonomov, J. and Starbova, K. and Giesen, M.},
      title        = {{M}easurements of {S}tep and {K}ink {E}nergies and of the
                      {S}tep {E}dge {S}tiffness from {I}sland {S}tudies on
                      {P}t(111)},
      journal      = {Physical review / B},
      volume       = {75},
      number       = {24},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-57110},
      pages        = {245411},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {By using temperature-variable scanning tunneling
                      microscopy, we studied two-dimensional vacancy islands on
                      Pt(111) between 593 and 713 K. Due to the difference in the
                      step free energies of A and B steps, the equilibrium shape
                      of the vacancy islands has a threefold symmetry. From the
                      analysis of the equilibrium shape of the vacancy islands, we
                      calculate the angular dependence of the step free energy on
                      Pt(111). The absolute values for the step free energies per
                      atom of A and B steps are determined from the equilibrium
                      shape fluctuations to be beta(A)=348 +/- 16 meV/atom and
                      beta(B)=300 +/- 14 meV/atom, respectively. Furthermore, we
                      derive the temperature dependence of the step-edge stiffness
                      (beta) over tilde with (beta) over tilde (A) between 510 and
                      453 meV/atom and (beta) over tilde (B) between 1974 and 1104
                      meV/atom in the temperature range considered. From the
                      stiffness, we obtain the kink formation energies for A and B
                      steps, epsilon(A)=143 +/- 9 meV and epsilon(B)=206 +/- 9
                      meV, respectively.},
      keywords     = {J (WoSType)},
      cin          = {IBN-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB802},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000247625000110},
      doi          = {10.1103/PhysRevB.75.245411},
      url          = {https://juser.fz-juelich.de/record/57110},
}