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Heavy fermions exhibit strong correlations and variety of ordered states stemming from strong hybridization and Kondo screening. Nature of some of these ordered states like Hidden Order in URu2Si2 is not settled. Recent advances in local scanning spectroscopies shed a new light on these correlated states and reveal significant suprises in the electronics of Kondo lattices. I focus on the hybridization wave as the order parameter in URu2Si2 and possibly other materials with similar band structures. I will introduce a simple phenomenological model for the 'hidden order' transition in the heavy Fermion material URu2Si2. The 'hidden order' is identified as an incommensurate, momentum-carrying hybridization between the light hole band and the heavy electron band. The model is qualitatively consistent with numerous experimental results obtained from e.g. neutron scattering and scanning tunneling microscopy. I also will present predictions which are amenable to current experiments.

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Prof. Dr. Alexander Balatsky, Los Alamos National Laboratory
Seminar Room ITP
Contact: not specified