Tuning Giant Rashba Spin-Orbit Coupling in Polar Single Layer Transition Metal Dichalcogenides – GRaSkop

With charge-based electronics getting to their limits in storage density, speed and energy consumption, spin-based electronics (spintronics) is now a central research topic and promises significant improvements in device performances. Controlling spins with an electric field is a major goal in spintronics. The GRaSkop project aims at studying and exploiting the Rashba spin-orbit coupling (SOC) in polar two-dimensional transition metal dichalcogenides. We aim to study the electronic and optical properties of single layer MXY (MoSSe, WSSe) grown by CVD with different % of S and Se. Our goal is to study systematically the electronic band structure modifications of the WSSe using Angle-Resolved Photoemission Spectroscopy combined with photoluminescence/reflectance measurements, with support from theoretical calculations. Such an approach will allow us to monitor the realization of opto-electronic devices of different types and perform magnetic-field- and temperature-dependent transport. A main objective is to determine the high Rashba spin-orbit coupling within these materials.