Regensburg 2013 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 58: Poster Session III (Solid-liquid interfaces; Scanning probe and other methods; Electronic structure theory; Spin-orbit interaction)

O 58.65: Poster

Mittwoch, 13. März 2013, 18:15–21:45, Poster B1

Combining High-Resolution Scanning Probe Studies with Reactivity Experiments — •Hendrik Ronneburg, Stefanie Stuckenholz, Christin Büchner, Gero Thielsch, Markus Heyde, and Hans-Joachim Freund — Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany

In our group we use noncontact atomic force microscopy (nc-AFM) and scanning tunneling microscopy (STM) for the analysis of metal supported thin oxide films. This custom built instrumentation gives us the opportunity to gain a deeper understanding of oxide surfaces at the atomic level, e.g. MgO [1].

These scanning probe measurements should ideally be accompanied by reactivity studies. Therefore, we are setting up a new temperature programmed desorption (TPD) experiment.

In this setup the adsorption of CO on MgO surfaces will be studied. This reaction serves as a model for the interaction of CO with an ionic surface [2, 3].

Plans for the integration of a low temperature TPD setup with the existing ultra high vacuum chamber will be presented.

[1] T. König, et al., Beilstein J. Nanotechnol. 2, 1 (2011)

[2] R. Wichtendahl, et al., Phys. Status Solidi A 173, 93 (1999)

[3] M. Sterrer, et al., Surf. Sci. 596, 222 (2005)