In this review, we examine the latest experimental advances in materials science, focusing
primarily on 5d transition metal-based double perovskite oxides, particularly rhenium (Re) …

Spin–orbit effects in heavy 5d transition metal oxides, in particular, iridates, have received
enormous current interest due to the prediction as well as the realization of a plethora of …

We establish the double perovskite Ba 2 CeIrO 6 as a nearly ideal model system for j= 1/2
moments, with resonant inelastic x-ray scattering indicating that the ideal j= 1/2 state …

We present an experimental investigation of the magnetic ground state in Ba 4 NbIr 3 O 12,
a fractional valent trimer iridate. X-ray absorption and photoemission spectroscopy show that …

Motivated by several claims of spin-orbit-driven spin-liquid physics in hexagonal Ba 3 Ti 3− x
Ir x O 9 hosting Ir 2 O 9 dimers, we report on resonant inelastic x-ray scattering (RIXS) at the …

Iridates with the 5 d 4 electronic configuration have attracted recent interest due to reports of
magnetically ordered ground states despite longstanding expectations that their strong spin …

We have investigated the electronic structure of the A 2 YReO 6 (A= Ba and Sr) double
perovskites with the 5 d 2 (Re 5+) configuration within the density-functional theory (DFT) …

Investigation of elementary excitations has advanced our understanding of many-body
physics governing most physical properties of matter. Recently spin-orbit excitons have …

The half-filled t 2 g shell of the t 2 g 3 configuration usually, in LS coupling, hosts a S= 3/2
ground state with quenched orbital moment. This state is not Jahn-Teller active. Sufficiently …

The mixed-valent iridate Ba 3 InIr 2 O 9 has been discussed as a promising candidate for
quantum spin-liquid behavior. The compound exhibits Ir 4.5+ ions in face-sharing IrO 6 …