Berlin 2005 – scientific programme
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O: Oberflächenphysik
O 36: Postersitzung (Elektronische Struktur, Grenzfl
äche fest-flüssig, Halbleiteroberfl
ächen und -grenzfl
ächen, Nanostrukturen, Oberfl
ächenreaktionen, Teilchen und Cluster, Struktur und Dynamik reiner Oberfl
ächen)
O 36.58: Poster
Monday, March 7, 2005, 15:00–18:00, Poster TU F
Ab initio approach for atomic relaxations in supported magnetic clusters — •A.L. Klavsyuk1, V.S. Stepanyuk1, L. Niebergall1, W. Hergert2, and P. Bruno1 — 1Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany — 2Fachbereich Physik, Martin-Luther-Universität, Halle-Wittenberg,Friedemann-Bach-Platz 6, D-06099 Halle, Germany
We present a newly developed scheme for atomic relaxations of magnetic supported clusters. Our approach is based on the full potential Korringa-Kohn-Rostoker Green’s function method and the second moment tight-binding approximation for many-body potentials. We demonstrate that only a few iterations in ab initio calculations are necessary to find an equilibrium structure of supported clusters. As an example, we present our results for small Co clusters on Cu(001). Changes in electronic and magnetic states of clusters due to atomic relaxations are revealed.