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TT: Fachverband Tiefe Temperaturen

TT 79: Correlated Electrons - Poster Session

TT 79.57: Poster

Mittwoch, 2. April 2014, 15:00–19:00, P2

Interplay of Spin-Orbit Coupling and Electron Correlations in Iridate Compounds — •Alexander Hampel and Frank Lechermann — 1. Institut für Theoretische Physik, Universität Hamburg, Germany

This work deals with the investigation of the electronic structure of perovskite iridates, such as Ba₂IrO₄. Recent experiments exploring different iridate compounds found out that the cooperation of strong electron correlations and spin-orbit coupling plays an important role in the correct description of their physical behaviour. The reason for this are large spin-orbit interaction energies in the 5d transition metal oxides, which have the same order of magnitude as the local Coulomb interaction.
We apply a combination of density functional theory (DFT) with explicit many-body methods to handle the realistic electronic correlations within the relativistic environment. More explicitly, the mixed-basis pseudopotential approach is allied with rotational-invariant slave bosons in order to address the intriguing correlated spin-orbit physics.