Topological phases in iridium oxide superlattices: Quantized anomalous charge or valley Hall insulators
Topological phases in iridium oxide superlattices: Quantized anomalous charge or valley Hall insulators
We study topological phases in Iridium (Ir) oxide superlattices of orthorhombic perovskite-type grown along the [001] crystallographic axis. Due to strong spin-orbit coupling of Ir 5d-orbitals and electronic correlation effects, Ir oxide bilayer superlattices display topological magnetic insulators exhibiting quantized anomalous Hall effects. Depending on stacking of two layers, we …