The work was supported by the Russian Science Foundation via project RSF 23-42-00069, and the National Natural Science Foundation of China (Grant 12261131499).
Citation:
Z. V. Pchelkina, E. V. Komleva, V. Yu. Irkhin, Y. Long, S. V. Streltsov, “Rattling phonon modes in quadruple perovskites”, Pis'ma v Zh. Èksper. Teoret. Fiz., 118:10 (2023), 733–734; JETP Letters, 118:10 (2023), 738–741