Berlin 2015 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 35: Nanostructures at Surfaces
O 35.11: Poster
Dienstag, 17. März 2015, 18:15–21:00, Poster A
Investigation of the geometric structure of small deposited Au clusters. — Ivan Baev1, Torben Beeck1, •Deniza Chekrygina1, Stephan Klumpp1, Michael Martins1, Stephan Roth2, Parasmani Rajput3, Gonzalo Santoro2, Sarathlal Koyiloth Vayalil2, and Wilfried Wurth1,2 — 1Physics Department, University of Hamburg, D-22761, Hamburg, Germany — 2DESY, D-22607, Hamburg, Germany — 33Atomic & Molecular Physics Division, Bhabha Atomic Research Center, Trombay, 400085, Mumbai, India
The investigation of new materials is nowadays propelled by the possibility to create size selected clusters of any desired materials. With the improvement of new 3rd generation synchrotron sources it should be possible to measure the geometric structure of clusters as small as several atoms in size. So far studies using spectroscopic techniques have focused on electronic and magnetic properties of small deposited metal clusters which could show new promising physical and chemical properties.
In this work we present a development towards disentangling structural effects from pure electronic effects as function of cluster size, with a main goal to investigate the geometry of deposited Au clusters on a Si wafer stabilized with an Al cap layer. In our work we are going to use grazing incidence small angle x-ray scattering (GISAXS) and x-ray absorption spectroscopy (EXAFS) to achieve this goal.
This work is supported by a PIER innovation grant.