Magneto-transport response of correlated Weyl semimetal Eu₂Ir₂O₇

The pyrochlore iridates (R₂Ir₂O₇, R=rare-earth and Y) family host a Weyl semi-metallic state stabilized by its antiferromagnetic all-in-all-out order. In (111)-oriented Eu₂Ir₂O₇ thin films, signatures in magnetic scattering and anomalous Hall effect point towards antiferromagnetic order and nontrivial Berry curvature indicative of Weyl nodes in the band structure. In this talk, we report on new transport signatures revealed by high magnetic field measured down to 20 mK. We demonstrate the emergence of planar Hall effect due to the chiral anomaly and unexpected symmetry breaking in angular magnetoresistance. Combined, this set of measurements opens the opportunity to deeply explore the topological properties of interacting Weyl materials.