Regensburg 2007 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 17: Poster Session I (Nanostructures at Surfaces; Metal Substrates: Epitaxy and Growth; Methods: Scanning Probe Techniques; Phase Transitions)

O 17.28: Poster

Montag, 26. März 2007, 17:30–20:30, Poster C

STM study of the adsorption of Au on Mo(110) — •Wojciech Linhart¹, Adam Paruszewski¹, Izabela Cebula¹, Zbigniew Jankowski¹, Tomasz Kobiela², and Aleksander Krupski¹ — ¹Institute of Experimental Physics, University of Wrocław, Poland — ²Institute of Physical and Theoretical Chemistry, University of Bonn,Germany

Scanning tunneling microscopy (STM) has been used for the first time to investigate the growth of ultrathin Au films on the Mo(110) surface.The measurements were carried out in a metal ultrahigh-vacuum. The Mo(110) crystal was cleaned by repetitive flashing at 1200 K in oxygen atmosphere to remove the residual carbon contamination. The oxygen was removed by flashing the sample at 2400 K. Gold was evaporated onto the crystal surface from a tantalum crucible surrounded by a tungsten resistive heater. The clean Mo(110) surface exhibits smooth single-step terraces ranging in width from 10 to 40 nm. These terraces are long and narrow and terminate in straight step-edges.