MESA+ University of Twente
Interfaces and correlated electrons

Device theory

The current research activities in the Device Theory group focus on theory of electronic transport in micro- and nano-structures involving superconductors (high Tc and low Tc) and other materials: normal metals, semiconductors and metallic ferromagnets. The application of these structures in novel (quantum)-electronic devices is investigated. This research is divided into several directions:

1. Nonequilibrium effects in Josephson junctions: theory of particle detection with superconducting tunnel junctions and nonequilibrium effects in double-barrier junctions (supported by ESA/ESTEC).

2. Proximity and Josephson effect in superconductor-ferromagnet (SF and SFS) junctions: theoretical study of current-phase relation and mechanisms of 0-pi transitions in SFS junctions and their arrays (supported by FOM).

3. Thermodynamic and transport properties of anisotropic and multiband superconductors and application to the new superconductor MgB2.

4. Macroscopic Quantum Tunneling (MQT) in unconventional Josephson junctions involving d-wave superconductors or SFS pi-junctions (supported by NanoNed program).

5. General symmetry properties and odd-frequency pairing in spatially inhomogeneous superconductors.