Berlin 2008 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 43: Poster Session II - MA 141/144 (Surface Spectroscopy on Kondo Systems; Frontiers of Surface Sensitive Electron Microscopy; Methods: Scanning Probe Techniques+Electronic Structure Theory+Other; Time-Resolved Spectroscopy of Surface Dynamics with EUV and XUV Radiation; joined by SYNF posters)

O 43.16: Poster

Dienstag, 26. Februar 2008, 18:30–19:30, Poster F

Development of an UHV variable temperature STM — •Thomas Eelbo, Mike Gyamfi, Stefan Meckler, Oswald Pietzsch, and Roland Wiesendanger — Institute of Applied Physics and Microstructure Advanced Research Center Hamburg, University of Hamburg, Jungiusstraße 11, 20355 Hamburg, Germany

The design of a new VT-STM is presented together with a numerical simulation for the temperature behaviour of the system. The microscope will be installed into a two chamber ultra high vacuum system for studying local electronic and magnetic states of self-assembled nanostructures at atomic length scale.

The microscope is equipped with an inertial drive for Slip-Stick based tip-coarse approach. A mechanism for in-situ tip and sample exchange has been integrated, being crucial for spin polarized experiments using magnetically coated tips.

During the development of the microscope special attention was paid on the minimization of the base temperature. Therefore a numerical simulation was written, which describes the thermal anchoring of various parts to the flow cryostat and the chamber system.