Two-dimensional (2D) charge systems have been a platform for intriguing physical phenomena such as Quantum Hall effect, Berisinskii-Kosterlitz-Thouless (BKT) phase transition and, also for confined electronic devices such as quantum point contact and quantum dots. The van der Waals (vdW) materials constitute a wide category of materials that can be separated to atomically thin layers, stacked in different combinations creating a plethora of engineered heterostructures with designed properties. The semiconducting vdW materials such as MoS2 have shown to develop superconducting properties when the carrier doping is increased and fascinating many-body states such as Ising superconductivity, have been observed. Recently, it was shown that the twist angle between the layers also plays a major role in engineering the interactions.
The goal of this project is to fabricate twisted bilayer MoS2 and MoS2-graphene heterostructures controlling the angle between, performing structural characterisation, studying the superconducting properties using magneto-transport together with microwave radiation and surface acoustic waves in order to further insight into correlated electron phenomena in vdW-materials.