Electronic Structure and Spin Texture at Organic Semiconductor Interfaces

Interfaces of organic semiconductors with inorganic solids are notoriously difficult to understand and tailor due to fundamentally different perspectives when describing the electronic structure of each side in isolation. Considerable progress has been made for physisorptive weakly interacting systems, as well as in select more strongly interacting instances. For the latter, general approaches are however still missing. Here, I will show how both electronic structure and magnetic texture can be tailored and understood by judicious choice of the organic semiconductor. I will discuss several case studies of chemisorption that use designer molecule-surface interactions at organic-metal and organic-topological insulator interfaces to control electronic interactions and spin texture. This opens a pathway towards an improved understanding of organic semiconductor interfaces even in strongly interacting cases.