University thesis:
Dissertation, Georg-August-Universität Göttingen, 2022
Footnote:
Description:
This thesis contributes to the investigation of solid-state systems with a strong coupling between electrons and the surrounding atomic lattice (phonons). One focus point of the thesis is the material class of $Pr_{1-x}Ca_{x}MnO_3$ (PCMO), a strongly correlated perovskite manganese oxide, which shows a photovoltaic effect that is highly influenced by the electron-phonon interactions present in the material. We use a theoretical model including electron, phonon, and spin degrees of freedom in a combined quantum-mechanical/classical description to investigate ground-state ordered phases and t...