Group Seminar at MPQ & via Zoom: Probing optical signatures of quasiparticles in two-dimensional semiconductors

Si Wang, ETH Zurich
Group Seminar at MPQ & via video conference (Zoom)
Tuesday, May 10, 10:15 am (MEZ)

Due to the Covid-19 pandemic, the group seminar will be a hybrid event, allowing participants to attend the seminar virtually and
in-person. This procedure enables us to continue our research, enhance discussions and exchange important information.

Abstract:

Transition metal dichalcogenide (TMD) monolayers are a widely investigated two-dimensional semiconductor. Their band structures have a direct band gap, which favors optical transitions. Furthermore, the electronic properties of TMD monolayers embedded in van der Waals heterostructures can be well controlled. These features allow for the formation of quasiparticles such as excitons and exciton-polarons, whose optical signatures can be probed via spectroscopy. In this talk, I will give an introduction to this field and present a novel technique named Stark-shift modulation spectroscopy which enables the detection of weak optical signatures.

If you would like to join our group seminar via Zoom, please contact us for more information.