Investigation of complex materials by resonant x-ray absorption

Correlated systems consisting of complex oxides or low dimensional systems provide endless possibilities to tune and create new functionalities for applications. One way of tuning these properties is by using heterostructures where thin layers are grown on top of each other. By proximity or simply due to the break of symmetry at the interface it’s possible to create, tune or enhance properties not existing in bulk.

In this lecture I’ll show some results of my research in the investigation of complex oxides heterostructures and 2D materials. My investigation is done by using primarily resonant x-ray absorption spectroscopy which allows to probe valence state, orbital occupation and magnetic moment resolved by chemical specimen. I’ll show how x-ray absorption can give important insights for understanding the ground state of these materials.