Berlin 2018 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 83: 2D Materials (Symposium and Joint Session with HL and O): Session III (joint session DS/CPP/HL)
CPP 83.5: Talk
Friday, March 16, 2018, 10:45–11:00, H 2032
Interface sensitive structure determination of silicon nano-ribbons on Gold surfaces — •Peter Roese1,2, Philipp Espeter1,2, Karim Shamout1,2, Ulf Berges1,2, and Carsten Westphal1,2 — 1Experimentelle Physik 1, Technische Universität Dortmund, Germany — 2DELTA, Technische Universität Dortmund, Germany
In the last years there has been much progress in the growth and analysis of 2D-materials beyond graphene on metallic surfaces. Especially, silicon based two-dimensional silicene and one-dimensional silicon nano-ribbons came into scientific focus due to their promising electronic properties. Beside the exact knowledge of the fascinating electronic and chemical properties of such systems, the structural information is of great interest for precise DFT calculations. In this context the interaction between the silicon nano-ribbons and the substrate plays an important role. Techniques like STM or LEED provide information about the electronic structure of such systems but neither chemical information about the atomic bonds nor information about the interface. Photoelectron spectroscopy and diffraction easily provide information about atomic bonds and the interface between silicon nano-ribbons and the substrate, recently shown by Espeter et al [8]. The structure of silicon nano-ribbons on Ag(110) has recently been resolved whereas their exact structure on Au(110) and the effect of the interface needs to be analyzed in detail. Based on previous works, we present first photoelectron diffraction results of silicon nano-ribbons on Au(110).