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DS: Fachverband Dünne Schichten

DS 29: Oxide and insulator surface: Structure, epitaxy and growth (joint session with O)

DS 29.11: Vortrag

Mittwoch, 18. März 2015, 17:30–17:45, MA 042

Surface Adsorbates and Defects on the Subsurface Cation Vacancy Stabilized Surface of Magnetite (001) — •Eamon McDermott¹, Roland Bliem², Gareth Parkinson², Ulrike Diebold², and Peter Blaha¹ — ¹Institute for Material Chemistry, TU Wien, Vienna, Austria — ²Institute of Applied Physics, TU Wien, Vienna, Austria

Having proposed a new surface reconstruction for the magnetite (001) surface which is stabilized by a subsurface cation vacancy, we are now studying the extended properties of this reconstruction, including its preferred adsorption sites for various metals, the properties of oxygen vacancies at the structure and the adsorption of CO and OH groups. The surface structure has interesting chemistry, due to the presence of an oxygen site with a +1 oxidation state. In particular, we are interested in understanding our database of known magnetite surface defects as observed by STM. Progress on several ongoing investigations will be reported.