Electron coherent phonon coupling in Pr 0.5 Ca 1.5 MnO 4 measured with ultrafast broadband spectroscopy
The study used ultrafast spectroscopy to show how coherent phonons modulate electronic states sensitive to different phases in Pr0.5Ca1.5MnO4. This modulation causes a non-linear change in the phonon signal with pump energy, revealing that the material's ultrafast response is sensitive to all phases and highlights the interplay between orbital ordering and lattice structure.