Temperature-Dependent Raman Signatures of Local Symmetry Breaking in Vacancy Double Perovskite Cs${}_2$SnI${}_6$

Tomke E. Glier, Nicholas J. Weadock, Julian A. Vigil +7

Understanding and controlling the optical, thermal and mechanical properties of K${}_2$PtCl${}_6$-type double perovskites is essential for the design of lead-free, high-performance the…