Jiahui Sun

Comprehensive study of carrier dynamics in gradient hydrogenated NdNiO3 using broadband ultrafast transient reflectivity spectroscopy

Hydrogenation of perovskite rare-earth nickelates induces giant lattice distortions and enhanced tilting/rotation of NiO6 octahedra, enabling a room-temperature metal–insulator transition. However, unraveling the couplings between ion, electron, and lattice degrees of freedom int...