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O: Oberflächenphysik

O 17: Adsorption II

O 17.6: Talk

Tuesday, March 28, 2006, 12:30–12:45, TRE Phys

Vibrations of ethylene on smooth and roughened single crystal copper surfaces — •Martin Binder, Olaf Skibbe, and Annemarie Pucci — Kirchhoff-Institut für Physik, Universität Heidelberg, INF 227, 69120 Heidelberg

The adsorption of ethylene on cold evaporated and annealed copper surfaces and on copper single crystal surfaces has been investigated with Raman spectroscopy and infrared reflection absorption spectroscopy in the past [1]. In order to clarify some remaining questions concerning the assignment of the spectral features to the adsorption sites, we performed high resolution electron energy loss spectroscopy (HREELS) on smooth and slightly roughened single crystal surfaces. Roughening was achieved by utilising ion bombardment without adjacent annealing and evaporating small amounts of copper at low temperatures, respectively.

[1] C. Siemes, A. Bruckbauer, A. Goussev, A. Otto, M. Sinther, and A. Pucci. J. Raman Spectrosc. 32 (2001), 231-239 and references therein