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Verhandlungen
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DPG

Berlin 2012 – scientific programme

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DS: Fachverband Dünne Schichten

DS 37: Poster II: Focused electron beam induced processing for the fabrication of nanostructures (focused session, jointly with O); Nanoengineered thin films; Layer properties: electrical, optical, and mechanical properties; Thin film characterization: structure analysis and composition (XRD, TEM, XPS, SIMS, RBS,..); Application of thin films

DS 37.30: Poster

Thursday, March 29, 2012, 15:00–17:00, Poster E

Spectroscopic Investigation of LaAlO3 - SrTiO3 Heterointerfaces — •Uwe Treske1, Andreas Koitzsch1, Martin Knupfer1, Kathrin Dörr2, and Bernd Büchner11IFW-Dresden — 2MLU Halle-Wittenberg

In recent years epitaxial growth of transition metal oxides became possible and exotic phenomena were found at their interfaces. A prominent example is the formation of a high-mobility two-dimensional electron gas at the interface of LaAlO3 grown on TiO2-terminated SrTiO3 substrates. Such heterointerfaces fabricated by pulsed laser deposition under various growth conditions were investigated with soft x-ray photoemission spectroscopy. We focused on stoichiometric aspects as well as in-gap states and differences in the core levels. Deviations from an abrupt interface without defects were found.

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