Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 71: Poster Wednesday: Adsorption and Catalysis

O 71.4: Poster

Mittwoch, 3. April 2019, 17:45–20:00, Poster B2

Moving atoms on surfaces: The impact of external parameters on the required forceJonathan Brand, •Nicolas Néel, and Jörg Kröger — Technische Universität Ilmenau, Ilmenau, Germany

Combining scanning tunneling microscopy and atomic force spectroscopy the dependence of the lateral force to move single adsorbed atoms on surfaces on the temperature is explored. A decrease of the force with increasing temperature is observed for all atoms and surfaces investigated and may be captured in a simple model. Crossing the critical temperature as well as surmounting the critical magnetic field of a superconductor does not lead to discriminable changes in the lateral force.

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