Orbital-Selective Mott phases: A New Paradigm in Correlation Physics
Professor Matthias Vojta, Technical University Dresden
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.