A momentum space perspective of interactions and electron dynamics of metal-organic hybrid interfaces
Dr. Benjamin Stadtmüller (Department of Physics and Research Center OPTIMAS, University of Kaiserslautern)

During the last decades, hybrid interfaces between organic and inorganic materials have attracted great interest not only due to their high relevance for future electronic and spintronic applications. They are also model systems which provide an ideal playground to study interactions across such interfaces and how these interactions determine experimental observables such as the vertical bonding distance or the energy level alignment.
In this presentation, we will demonstrate the potential of momentum microscopy to study the electronic fingerprints of the interactions occurring at (metal-organic) hybrid interfaces. In particular, we will focus on different ways to tailor the electronic (and thus also the geometric and spin-specific) properties of hybrid interfaces either “from the top” by charge doping of the adsorbate layer or “from the bottom” by surface alloying. In combination with other photoelectron spectroscopy techniques, these results will contribute to a more comprehensive understanding of these systems that can pave the way to a controlled design of hybrid interfaces according to their functional purpose. In addition, we will present time-resolved momentum microcopy results obtained for hybrid interfaces that will reveal the unique possibilities of momentum microscopy to directly trace relaxation pathways of excited electrons in momentum space.