Telephone numbers and e-mail addresses of the group members. Structures like quantum wells, superlattices, and heterostructures with 2-dimensional electron gases are investigated. For the characterization of the materials a comprehensive study of optical and transport properties is carried out in the group. To this end experiments with electrical pulses of about 0.5 ps are carried out on coplanar striplines with integrated low-dimensional structures and devices.
Special attention is paid to ballistic transport.
These projects include investigations of the Quantum Hall effect and the persistent photoconductivity. All these projects are strongly related to device problems. For example, detailed knowledge about the carrier dynamics and the carrier capture in quantum wells is essential for improving the performance of solid state quantum well lasers. To this end picosecond optical experiments together with Monte Carlo calculations are carried out. This software package is marketed through CryoVac .