  The evolution of both information and energy technology is intimately
connected to complex condensed matter systems, the properties of which are
determined by electronic and chemical interactions and processes on a broad
range of length and time scales. Dedicated photoelectron spectroscopy and
spectromicroscopy experiments can provide important insights. We discuss some
recent methodological developments with application to relevant questions in
spintronics, and towards in-operando studies of resistive switching and
electrochemical processes.
