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Regensburg 2013 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 15: Poster Session

MM 15.35: Poster

Monday, March 11, 2013, 18:00–20:00, Poster E

Influence of hydrogen on Ta(110) surfaces — •Sebastian Schleicher, Sara Wanjelik, and Mathias Getzlaff — Heinrich-Heine-Universität

Hydrogen in metals has attracted a lot of attention in the past decades. On the one hand this is caused by the technical application as hydrogen storage. On the other hand metal hydrogen systems are of great interest from a fundamental point of view.The goal of our investigations is a study of hydrogen absorbtion in a Ta(110) crystal. Careful cleaning of the Tantalum surface is essential as preparation for any measurement. The cleaning procedures are similar to those already discussed in various publications, involving flashing to high temperatures close to the melting point to remove H and O absorbates, and heating in an oxygen atmosphere to remove residual carbon impurities. Measurements are performed by means of scanning tunneling microscopy (STM) and low energy electron diffraction (LEED) in ultra-high vacuum conditions.

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