Born 1961 in Munich. Study of physics TU Munich, doctorate Technical Univ. Aachen (1989), postdoc in Rome and Princeton, German Habilitation in physics, Techn. Univ. Aachen (1995), Associate Professor Univ. Munich (1996), Full Professor Techn. Univ. Aachen (1998), Director and Scientific Member at the Max Planck Institute for Solid State Research (since 2001), Honorary Professor Univ. Stuttgart (2002).