## Current research activities

- Light-matter interaction

- Non-equilibrium charge dynamics in nano- and mesoscopic structures

The aim of these studies is the generation and control of charge currents and charge polarization of confined electronic systems by sculpturing appropriately the properties of the driving field. - Field-induced molecular alignment and orientation

We use standard methods of quantum dynamics and non-linear physics to figure out the optimal fields for inducing in gas-phase and surface-deposited polar molecules an alignment or an orientation of the molecular axis with respect a predefined external direction. - Radiation characteristics of nanoscopic structures

Using standard density-matrix and quantum electrodynamics methods we investigate the emission spectrum of semiconductor-based nanostructures such as nanorings and nanocrystals. - Quantum evolution and geometry

We look at the interrelation between the properties of driven quantum systems and geometric phases as well as the underlying classical dynamics. - Strong field physics

We inspect the behaviour of atomic and elementary particles exposed to high-intensity laser fields.

- Non-equilibrium charge dynamics in nano- and mesoscopic structures
- Spin dynamics and magnetotransport properties of nanoparticles

- None-collinear magnetoresistance of magnetic nanowires

Using many-body perturbation theory and renormalization-group techniques we inspect the role of electronic correlation on the transport properties of magnetized quantum wires with none-homogenously magnetized region. - Domain-wall dynamics

We are interested in the dynamics of a domain wall in magnetic nanowires driven by a spin or a charge current. The electron scattering from the domain wall is treated quantum mechanically, whereas the Landau-Lifshitz-Gilbert equation is used for modeling the dynamics of the domain wall. - Temperature-dependent spin dynamics

We study temperature effects on the switching behaviour of magnetic nanoparticles under the influence of different magnetic pulses.

- None-collinear magnetoresistance of magnetic nanowires
- Excitations and correlation in many-body systems

- Correlation spectroscopy

A major activity is devoted to the understanding of the nature of electron-electron interaction in atomic, molecular and condensed matter systems. In particular, we investigate in close cooperation with experiment the manifestation of electronic correlation in the two-particle spectrum measured in coincidence experiments. We utilize a variety of techniques ranging from fully numerical density-based and wave-function-based methods to many-body model calculations. - Corals and clusters on surfaces

We also do research on the electronic and magnetic properties of confined electronic systems such as corals and clusters at surfaces and multilayer structures.

- Correlation spectroscopy