Regensburg 2010 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 60: Poster Session III (Methods: Atomic and electronic structure; Methods: electronic structure theory; Methods: Molecular simulations and statistical mechanics; Methods: Sanning probe techniques; Methods: other (experimental); Methods: other (theory) )

O 60.22: Poster

Mittwoch, 24. März 2010, 17:45–20:30, Poster B2

Development of a modular multiple temperature UHV Scanning Tunneling Microscope — •Carsten Tröppner, Lutz Hammer, and Menko Alexander Schneider — Lehrstuhl für Festkörperphysik, Universität Erlangen-Nürnberg, Staudtstr. 7, 91058 Erlangen

We present our newly constructed low temperature scanning tunneling microscope (STM) designed for high resolution scanning tunneling spectroscopy (STS) measurements under ultra high vacuum (UHV) conditions. A standard non-UHV helium bath magnet cryostat is used for cooling the STM down to 4.2K and below (Eigler-Design). With the aim to carry out STM measurements at room temperature as well as low temperature we implemented the STM as a mobile unit, which can be transferred within the UHV chamber between regions of different temperature. The mobility of the STM furthermore provides an easy sample transfer and the possibility to transfer it out of the UHV chamber through a load-lock system. Hence the full instrument or the tip only can be exchanged.