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Orbital-Selective Mott phases: A New Paradigm in Correlation Physics

Professor Matthias Vojta, Technical University Dresden

Date:  December 8, 2010   10:30 

Place: Seminarraum 348 / 349, Fakultät für Physik der LMU München, Theresienstr. 37, 80333 München

Non-Fermi liquid behavior is observed experimentally in a variety of strongly correlated electron materials, but remains poorly understood. Among the interesting theoretical concepts is that of an orbital-selective Mott phase, where conduction electrons underdo a partial Mott localization. This concept is intimately related to the breakdown of the Kondo effect in heavy-fermion metals. In this talk, I will review the basic ideas and available theories for orbital-selective Mott behavior, construct a "global" phase diagram, and discuss proposals for its experimental realization in heavy-fermion compounds, ironpnictide superconductors, and cuprates.