Prof. Thomas Pruschke
Institute for Theoretical Physics, University of Gottingen, Germany
时间：2014年5月15日上午10：30：11：30
地点：唐仲英楼A313
主持人：王强华
摘要
The explanation of heavy-fermion superconductivity is a long standing challenge to theory. It is commonly thought to be connected to non-local fluctuations of either spin or charge degrees of freedom and therefore of unconventional type. Here we present dynamical mean-field theory results for the Kondo-lattice model, a paradigmatic model to describe heavy-fermion compounds, which show a robust s-wave superconductivity in the heavy-fermion state. We argue that this novel type of pairing is tightly connected to the formation of heavy quasiparticle bands and the presence of strong local spin fluctuations.
报告人简介：
Prof. Thomas Pruschke is mainly interested in the correlation effects of quantum-mechanical many-body systems, the electronic structure of correlated electron materials, the development of analytical and computational tools, and the ordering phenomena and transport in correlated electron systems. He has 117 publications in refereed journals plus in excess of 25 papers in conference proceedings, with many publications in Rev. Mod. Phys., Phys. Rev. Lett. and Nature Physics, etc. His present Hirsch index is 34.