Solid State Theory

Dr. rer. nat. in Marburg 1966; Postdoc Brown University 1968/69; Professor at University of Regensburg since 1972 Research visits and guest lectures in Strasbourg 1978, Stuttgart 1977/78, San Diego 1987, Grenoble 1992, Dublin 1993 and 2003, Dresden 1996, Madrid 2001. Chairman Semiconductor Section (German Physical Society) 1987-1992 Member IUPAP-Comission C8 (Semiconductors) 1988-1993; Chairman Condensed Matter Division (German Physical Society) 1992-1995 Member Scientific Council of the MPI für Festkörperforschung, Stuttgart 1990-2003(Chairman 1995-1998); Honorary degree (Dr. rer. nat h.c.) Humboldt University Berlin 2007; Research: Electronic properties of semiconductors and semiconductor nanostructures, more than 200 publications

• The Solid as a Many-Particle Problem.- Lattice Dynamics: Phonons.- The Free Electron Gas.- Electrons in a Periodic Potential.- Spin Waves: Magnons.- Correlated Electrons.- Electron#x2013;Phonon Interaction.- Defects, Disorder, and Localization.- Light#x2013;Matter Interaction.- Appendices.