Festkörperprobleme

Charge transfer between weakly coupled normal metals and superconductors at low temperatures.- Quantum effects and the onset of superconductivity in granular films.- Pattern formation in a liquid crystal.- X-ray absorption and reflection in materials sciences.- Propagation of large-wavevector acoustic phonons new perspectives from phonon imaging.- Theory of dynamical surface states and reconstructions at crystal surfaces.- Scanning tunneling microscopy and spectroscopy on clean and metal-covered Si surfaces.- Optical dephasing and orientational relaxation of wannier-excitons and free carriers in GaAs and GaAs/AlxGa1?xAs quantum wells.- The spectroscopic evidence for the identity of EL2 and the AsGa antisite in As-grown GaAs.- On the charge state of the EL2 mid gap level semi-insulating GaAs from a quantitative analysis of the compensation.- Deep donor levels (DX centers) in III-V semiconductors: Recent experimental results.- Chemical binding, stability and metastability of defects in semiconductors.- A new look at the reliability of thin film metallizations for microelectronic devices.- Quantum dot resonant tunneling spectroscopy.- DC and far infrared experiments on deep mesa etched single and multi-layered quantum wires.- Coherent electron focusing.- The size-induced metal-insulator transition and related electron interference phenomena in modern microelectronics.