Advances and possibilities of the Materials Innovation Platform with examples from Spin-ARPES

The quest for device applications based on quantum materials, such as topological insulators or superconductors, requires strict control of the environments these materials are exposed to during production and while under investigation. It is therefore most straightforward to gather all parts of the experiment, from sample growth to analysis, in one connected UHV system - creating a so-called Materials Innovation Platform (MIP). This approach has proven to be extraordinarily valuable in recent years.

In this presentation, I will focus on a combination of MBE/ARPES, and also coupled spin detection. The advantages of this set-up will be explored, as well as highlighting some of the very recent electronic band structure research performed with such a system. Two specific examples will be reviewed: Yang et al.[1] investigation of the impact of photogenerated carriers on the superconducting transition temperature; and advances high efficiency spin-ARPES. The work by Yang et al. was enabled by the in-situ growth and analysis possibility and clearly demonstrates the possibility of making energy-efficient quantum optoelectronics devices. Future possibilities of Spin-ARPES and laser-ARPES in combination with MIP set -up will also be discussed.
[1] Yang et al., Nature Comms. (2019)10:85