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000039891 0247_ $$2DOI$$a10.1016/S0039-6028(00)00888-8
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000039891 041__ $$aeng
000039891 082__ $$a540
000039891 084__ $$2WoS$$aChemistry, Physical
000039891 084__ $$2WoS$$aPhysics, Condensed Matter
000039891 1001_ $$0P:(DE-Juel1)4744$$aGiesen, M.$$b0$$uFZJ
000039891 245__ $$aWhat does one learn from equilibrium shapes of two-dimensional islands on surfaces?
000039891 260__ $$aAmsterdam$$bElsevier$$c2001
000039891 300__ $$a80 - 100
000039891 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000039891 440_0 $$05673$$aSurface Science$$v471$$x0039-6028
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000039891 520__ $$aThe equilibrium shape of islands has been determined with high accuracy as a function of temperature for Cu(1 0 0), Cu(1 1 1)and Ag(1 1 1)surfaces. The equilibrium shape is analyzed using the inverse Wulff-construction, the Ising-model, and two novel methods concerning the minimum curvature and the aspect ratio of islands. From the conventional inverse Wulff-construction, the angle dependence of the step free energy is obtained. On Cu(1 1 1) and Ag( 1 1 1), the energies of A- and B-type steps differ only by about 1%. The analysis of the data using the analytical form of the equilibrium shape provided by the Ising-model yields quite acceptable values for the kink energy on (1 I I)surfaces, but not on the (1 0 0)-surface. It is shown that the reason for the failure is due to the different ratio of kink and step energies assumed in the Ising-model for the two surfaces. By combining well-known relations on the statistical mechanics of steps and islands, a simple relation between the kink energy and the minimum curvature of the equilibrium shape is derived and the experimental data are analyzed accordingly for the kink energies on all surfaces. On the Cu(1 0 0)-surface, the kink energy compares well with an earlier independent experimental result. The temperature dependence of the free energy of the 100% kinked step in (1 0 0)- and (1 1 1)-islands is calculated theoretically using general principles. The theory is used to determine the absolute values of the step energies from the experimental data. (C) 2001 Elsevier Science B.V. All rights reserved.
000039891 536__ $$0G:(DE-Juel1)FUEK60$$2G:(DE-HGF)$$aStruktur und  Dynamik von Grenzflächen$$c29.25.0$$x0
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000039891 65320 $$2Author$$aequilibrium thermodynamics and statistical mechanics
000039891 65320 $$2Author$$aIsing models
000039891 65320 $$2Author$$asurface diffusion
000039891 65320 $$2Author$$agrowth
000039891 65320 $$2Author$$acopper
000039891 65320 $$2Author$$asilver
000039891 65320 $$2Author$$asingle crystal surfaces
000039891 7001_ $$0P:(DE-Juel1)VDB5711$$aSteimer, C.$$b1$$uFZJ
000039891 7001_ $$0P:(DE-Juel1)VDB5414$$aIbach, H.$$b2$$uFZJ
000039891 773__ $$0PERI:(DE-600)1479030-0$$a10.1016/S0039-6028(00)00888-8$$gVol. 471, p. 80 - 100$$p80 - 100$$q471<80 - 100$$tSurface science$$v471$$x0039-6028$$y2001
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000039891 9131_ $$0G:(DE-Juel1)FUEK60$$bStruktur der Materie und Materialforschung$$k29.25.0$$lGrenzflächen- und Vakuumforschung$$vStruktur und  Dynamik von Grenzflächen$$x0
000039891 9141_ $$y2001
000039891 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000039891 9201_ $$0I:(DE-Juel1)VDB43$$d31.12.2006$$gISG$$kISG-3$$lInstitut für Grenzflächen und Vakuumtechnologien$$x0
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