Chemistry Department Seminar

"An Atomic Scale View of Transition Metal Oxide Surfaces"

Presented by Ulrike Diebold, Tulane University

Wednesday, December 7, 2005, 11:00 am — Hamilton Seminar Room, Bldg. 555

Semiconducting transition metal oxides are used as bio-materials, in chemical sensors, for energy-related devices such as solar cells and photocatalysts, and represent an important class of optical and electronic materials. In many applications, surface and interface properties are critical to device functioning. Our research focuses on identifying the nano-scale properties of semiconducting oxides (e.g., TiO2, ZnO, SnO2) with Scanning Tunneling Microscopy and complementary surface spectroscopic techniques. Of particular interest are defects - either intrinsic ones such as missing atoms or step edges, or extrinsic dopants - and their influence on local electronic, geometric, magnetic, and chemical properties. The talk will give an overview of the power of scanning probe techniques to visualize surface atomic and electronic structure and will give examples of recent results.

Hosted by: Alex Harris

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