Berlin 2012 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 35: Poster Session II (Polymeric biomolecular films; Nanostructures; Electronic structure; Spin-orbit interaction; Phase transitions; Surface chemical reactions; Heterogeneous catalysis; Particles and clusters; Surface magnetism; Electron and spin dynamics; Surface dynamics; Methods; Electronic structure theory; Functional molecules)

O 35.124: Poster

Dienstag, 27. März 2012, 18:15–21:45, Poster B

Development of a cryogenic scanning tunneling microscope with integrated optical lenses — •Jeannette Kemmer, Jens Kügel, Pin-Jui Hsu, Paolo Sessi, and Matthias Bode — Institute of Experimental Physics II, University Würzburg, Am Hubland, 97074 Würzburg

We present the current status of a home-built low-temperature Scanning Tunneling Microscope (STM) with integrated lenses for in-situ optical excitation studies. The STM design includes an x-y-stage for sample positioning as well as lenses for back- and front-side focused laser illumination. It is integrated into a two-chamber UHV system equipped with a commercial LHe cryostat with a projected hold time of t >100 h. Test measurements performed under ambient conditions (HOPG), UHV and at low-temperatures will be presented.