Regensburg 2013 – scientific programme
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O: Fachverband Oberflächenphysik
O 53: Scanning Probe Methods II
O 53.3: Talk
Wednesday, March 13, 2013, 16:30–16:45, H31
Mapping the surface adsorption potential with the scanning tunneling microscope — •Georgy Kichin1,2, Christian Wagner1,2, Stefan Tautz1,2, and Ruslan Temirov1,2 — 1Peter Grünberg Institute (PGI-3), Forschungszentrum Jülich, Germany — 2JARA-Fundamentals of Future Information Technology, Germany
We propose a new method that allows us to study the adsorption behavior of molecular hydrogen or deuterium on the surface with atomic scale resolution. First, the molecular gas is condensed in the junction of the low-temperature scanning tunneling microscope (LT STM). Passing the tunneling current through the junction the vibrational excitations of the molecules are induced by inelastically scattered electrons. By mapping the inelastic excitation energy along the surface we obtain the information that is related to the local adsorption potential of the gas molecules on this surface. We will discuss how this information can be used to reconstruct the quantitative information about the surface adsorption potential.