Photo-induced insulator-to-metal transition and coherent acoustic phonon propagation in LaCoO${}_3$ thin films explored by femtosecond pump-probe ellipsometry

M. Zahradnik, M. Kiaba, S. Espinoza +6

We have studied ultrafast dynamics of thin films of LaCoO${}_3$ and La${}_{0.5}$Sr${}_{0.5}$CoO${}_3$ with femtosecond pump-probe ellipsometry in the energy range of 1.6-3.4 eV. We have ob…