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Warwick Physics Colloquium

Wednesday 9th january 2008, 16:30-17:30, PLT, 3rd Floor, Physics Dept.

Kevin Smith, University of Boston: Soft X-Ray Emission Spectroscopy and Resonant Inelastic X-Ray Scattering: Novel Probes of Electronic Structure in Complex Materials

Detailed electronic structure measurements are required in order to fully understand many physical phenomena in solids. While photoemission spectroscopy is often the electronic structure probe of choice, there are many sample and environmental constraints that must be satisfied before meaningful data can be obtained with this spectroscopy.

I will discuss the development of high resolution synchrotron radiation-excited soft x-ray emission spectroscopy, which can probe solid state electronic structure in circumstances where photoemission spectroscopy is inapplicable. When the incident synchrotron radiation is tuned close to a core level absorption edge, the x-ray emission process is more appropriately described as a resonant x-ray scattering event, and this scattering technique provides further information on excitations in the solid. The x-ray emission and x-ray scattering techniques will be introduced, and examples of their application to correlated oxides, nitride semiconductors, and organic solids will be presented.

This event is open to all - Attendance is free of charge

More information is available at the Department of Physics

Contact: Dr Oleg Petrenko - for further information