Berlin 2008 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 53: Surface Nanopatterns

O 53.6: Vortrag

Mittwoch, 27. Februar 2008, 16:30–16:45, MA 043

Bifurcation behavior of the anisotropic damped Kuramoto-Sivashinsky equation — Christian Rehwald, Karsten Dreimann, Sebastian Vogel, and •Stefan Jakob Linz — Institut für Theoretische Physik, Universität Münster, Wilhelm-Klemm-Straße 9, 48149 Münster, Germany

A recently proposed continuum model [1] for the formation of surface patterns on semiconductor surfaces generated by low-energy ion-beam erosion under normal and oblique ion incidence is studied in analytical and numerical details. After transformation, this model takes on the form of a damped anisotropic Kuramoto-Sivashinsky equation. Primary focus of our investigation [2] is the theoretical analysis of the competition of flat, rhombic and ripple-like surface structures and their stability and bifurcation behavior as function of the entering parameters. Comparison with recent experimental results will also be given.

[1] S. Vogel, S.J. Linz, Europhys.Lett. 76, 884-890 (2006)

[2] C. Rehwald, K. Dreimann, S. Vogel, S.J. Linz, unpublished