Free-electron lasers and high-harmonic-generation table-top systems are new sources of
extreme-ultraviolet to hard X-ray photons, providing ultrashort pulses that are intense …

Light-driven phenomena in organic molecular aggregates underpin several mechanisms
relevant to optoelectronic applications. Modeling these processes is essential for aiding the …

Elementary events that determine photochemical outcomes and molecular functionalities
happen on the femtosecond and subfemtosecond timescales. Among the most ubiquitous …

Conical intersections (CoIns) play an important role in ultrafast relaxation channels. Their
monitoring remains a formidable experimental challenge. We theoretically compare the …

Electronic coherences are key to understanding and controlling photoinduced molecular
transformations. We identify a crucial quantum-mechanical feature of electron-nuclear …

We explore the capabilities offered by attosecond extreme ultraviolet and x-ray pulses that
can now be generated by free-electron lasers and high-order harmonic generation sources …

The fate of virtually all photochemical reactions is determined by conical intersections.
These are energetically degenerate regions of molecular potential energy surfaces that …

Understanding conical intersection (CI) dynamics and subsequent conformational changes
is key for exploring and controlling photo-reactions in aromatic molecules. Monitoring of their …

We apply ultrashort X-ray laser pulses to track optically excited structural dynamics of [Ir2
(dimen) 4] 2+ molecules in solution. In our exploratory study we determine angular …

Linear off-resonant x-ray Raman techniques are capable of detecting the ultrafast electronic
coherences generated when a photoexcited wave packet passes through a conical …