Quantum transport phenomena in 2D semiconductor-superconductor hybrid structures

In this dissertation, we introduce platforms for hybrid semiconductor- superconductor devices based on 2D semiconductor crystals, namely molybdenum disulfide (MoS2) and indium selenide (InSe). These are combined with superconductors such as aluminium, molybdenum rhenium, and tin. The main challenge lies in achieving reliable electrical contact to the 2D semiconductors and obtaining coherent coupling across the material interface. The properties of these devices are explored in spectroscopy measurements which show evidences of quantum coherent phenomena. Additionally, we demonstrate control over the semiconductor by a well-defined nanostructure, a quantum point contact, which can be used for probing superconducting proximitized region.