Pseudospin-phonon pretransitional dynamics in lead halide hybrid perovskites

B. Hehlen, P. Bourges, B. Rufflé +9

The low frequency lattice vibrations and relaxations are investigated in single crystals of the four 3D hybrid organolead perovskites, MAPbBr${}_3$, FAPbBr${}_3$, MAPbI${}_3$, and $\alpha$-FA…