Author(s): Alsu Ivashko, Taishun Manjo, Maximilian Kauth, Yuliia Tymoshenko, Adrian M. Merritt, Klaus-Peter Bohnen, Rolf Heid, Michael Merz, Andreas Eich, John-Paul Castellan, Alexandre Ivanov, Nathaniel Schreiber, Hong Zheng, J. F. Mitchell, Martin Meven, Jitae T. Park, Daisuke Ishikawa, Yuiga Nakamura, Alfred Q. R. Baron, and Frank Weber We investigate lattice dynamics in ${\text{LaCoO}}_{3}$ using inelastic neutron and x-ray scattering over $\mathrm{T}=2−650\text{ }\text{ }\mathrm{K}$, spanning the spin-state crossover at ${\mathrm{T}}_{1}≈100\text{ }\text{ }\mathrm{K}$ and the insulator-metal transition at ${\mathrm{T}}_{2}≈550\te… [Phys. Rev. Lett. 137, 116101] Published Fri Sep 11, 2026