Photoinduced excited-state dynamics in Co-doped BaFe2As2 superconducting films

The nonlinear optical dynamics and structural transformation of Co-doped BaFe2As2 superconducting films demonstrate complex behavior within a broad range of temperatures. The angle-resolved light scattering conoscopy reveals the temperature-dependent structural transformation of the optimally doped BaFe2As2. Photoinduced excited states dynamics demonstrate the instantaneous formation of the nonequilibrium state of quasiparticles with its subsequent multi-step thermalization within several picoseconds. These transient processes show noticeable temperature dependence below superconducting transition point T-c, where photoinduced dynamics correlate with the surface morphology.

Automated summary

The Co-doped BaFe2As2 superconducting films exhibit complex nonlinear optical dynamics and structural transformation over a wide range of temperatures. The angle-resolved light scattering conoscopy reveals the temperature-dependent structural transformation of optimally doped BaFe2As2. Photoinduced excited states dynamics demonstrate the instantaneous formation of nonequilibrium quasiparticles, followed by multi-step thermalization within several picoseconds. These transient processes show noticeable temperature dependence below the superconducting transition point Tc, where they correlate with the surface morphology.