Speakers: Jan Kuneš
Place: Seminary room at the Library of the Institute of Physics ASCR, Cukrovarnická 10, Praha 6
Presented in English
Organisers:
Department of Magnetics and Superconductors
In strongly correlated materials the local charge fluctuations are strongly suppressed and a single atomic multiplet typically dominates among the states visited by any given atom. In some materials, however, several multiplets may happen to be competing giving rise to strong temperature dependence of physical quantities, such as the magnetic susceptibility or conductivity. Cobaltites of the LaCoO3 family are a well known example. We use the dynamical mean-field theory (DMFT) to investigate these effects using a minimal 2-band Hubbard model as well as multi-band models of LaCoO3 and SrCoO3 obtained from ab-initio band structures.
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