Dresden 2020 – scientific programme

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MA: Fachverband Magnetismus

MA 9: Weyl Semimetals

MA 9.1: Talk

Monday, March 16, 2020, 11:30–11:45, POT 6

Strong Correlations in Pyrochlore-Iridates based on the example of Y2IrO7 — •Johannes Graspeuntner — TU Graz, Österreich

Pyrochlore-Iridates have attracted some attention after being proposed to host topological non-trivial states. In this talk we will investigate one example of this class of materials, namely Y2IrO7, and study the effect of strong electronic correlations on the electronic structure. We will investigate the validity of one-band description using only the effective j=1/2 states around the Fermi energy, as compared to a complete treatment of the full t2g shell, where a closer look is taken on the AIAO magnetic ordering on the frustrated Pyrochlore lattice. Furthermore, we will discuss short-ranged non-local correlation effects via a cluster-DMFT treatment.