Coulomb correlations in multi-orbital materials
Ansgar Liebsch
Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich, Germany
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The dynamical mean field theory is used to describe Coulomb
interactions in strongly correlated transition metal oxides.
In particular, we discuss the modification of the Fermi
Surface of NaxCoO2 caused by inter-orbital charge transfer
and the nature of the Mott transition in CaxSr2-xRuO4.
The theoretical results are compared with recent angle-
resolved photoemission measurements on these systems.
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