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@ARTICLE{Giesen:39891,
      author       = {Giesen, M. and Steimer, C. and Ibach, H.},
      title        = {{W}hat does one learn from equilibrium shapes of
                      two-dimensional islands on surfaces?},
      journal      = {Surface science},
      volume       = {471},
      issn         = {0039-6028},
      address      = {Amsterdam},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-39891},
      pages        = {80 - 100},
      year         = {2001},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The equilibrium shape of islands has been determined with
                      high accuracy as a function of temperature for Cu(1 0 0),
                      Cu(1 1 1)and Ag(1 1 1)surfaces. The equilibrium shape is
                      analyzed using the inverse Wulff-construction, the
                      Ising-model, and two novel methods concerning the minimum
                      curvature and the aspect ratio of islands. From the
                      conventional inverse Wulff-construction, the angle
                      dependence of the step free energy is obtained. On Cu(1 1 1)
                      and Ag( 1 1 1), the energies of A- and B-type steps differ
                      only by about $1\%.$ The analysis of the data using the
                      analytical form of the equilibrium shape provided by the
                      Ising-model yields quite acceptable values for the kink
                      energy on (1 I I)surfaces, but not on the (1 0 0)-surface.
                      It is shown that the reason for the failure is due to the
                      different ratio of kink and step energies assumed in the
                      Ising-model for the two surfaces. By combining well-known
                      relations on the statistical mechanics of steps and islands,
                      a simple relation between the kink energy and the minimum
                      curvature of the equilibrium shape is derived and the
                      experimental data are analyzed accordingly for the kink
                      energies on all surfaces. On the Cu(1 0 0)-surface, the kink
                      energy compares well with an earlier independent
                      experimental result. The temperature dependence of the free
                      energy of the $100\%$ kinked step in (1 0 0)- and (1 1
                      1)-islands is calculated theoretically using general
                      principles. The theory is used to determine the absolute
                      values of the step energies from the experimental data. (C)
                      2001 Elsevier Science B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ISG-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB43},
      pnm          = {Struktur und Dynamik von Grenzflächen},
      pid          = {G:(DE-Juel1)FUEK60},
      shelfmark    = {Chemistry, Physical / Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000166709700010},
      doi          = {10.1016/S0039-6028(00)00888-8},
      url          = {https://juser.fz-juelich.de/record/39891},
}