Second-order Raman and anharmonic lattice dynamics in lead-halide perovskites

Chao Shen, Florian Kluibenschedl, Ayan A. Zhumekenov +4

We explore the microscopic origin of THz-driven lattice dynamics in methylammonium lead bromide CH${}_3$NH${}_3$PbBr${}_3$ using two-dimensional THz Kerr-effect spectroscopy. The analysi…