Ultraschnelle Dynamik in atomar dünnen Übergangsmetalldichalkogeniden im Magnetfeld

Basic data for this project

Description

The main goal of the proposed project is to elucidate in a joint theory and experiment effort the ultrafast dynamics of excitons in atomically thin transition metal dichalcogenides (TMDs) in an external magnetic field. To this end, we will derive microscopic TMD magneto-excitonic Bloch equations and calculate the optical fingerprint of the ultrafast exciton dynamics in a magnetic field, which will be measured in time-resolved photoluminescence and pump-probe experiments. We will investigate, for example, inter- and intravalley coupling mechanisms, the formation, interplay and relaxation pathways for spin- and momentum-forbidden excitonic states and the competition between Auger processes and exciton-phonon scattering as a function of magnetic field. The gained insights into the fundamental many-particle processes governing the ultrafast dynamics in these truly two-dimensional nanostructures will be of crucial importance for designing and engineering novel TMD-based optoelectronic devices.