Ralph Claessen

Ralph Claessen (* 1960 in Düsseldorf ) is a German physicist .

From 1980 to 1986 he studied physics at the Christian Albrechts University in Kiel . During a stay at the Cavendish Laboratory of the University of Cambridge , he completed a thesis that was recognized in Kiel as a thesis in theoretical physics. In 1987 he went to the Kiel Institute for Experimental Physics. Claessen wrote his dissertation with M. Skibowski on electron spectroscopic investigations on high-temperature superconductors (1991). As a Feodor Lynen Fellow of the Alexander von Humboldt Foundation, he moved to the University of Michigan in Ann Arbor . There he investigated many-particle effects in the electronic structure of metallic materials with JW Allen with the help of synchrotron radiation .

From the end of 1992 at the University of Saarland in Saarbrücken operates, he was in 1998 Stefan Hüfner with a thesis on in low-dimensional solids photoelectron spectroscopy of low energy excitations habilitation . During his work in Saarbrücken, he stayed several times for research purposes at the Stanford Synchrotron Radiation Center (USA) and at the Photon Factory in Tsukuba. Starting with the winter semester of 1998/99, he held a C3 professorship for experimental physics at the University of Augsburg . Claessen has held a C4 professorship at the chair for experimental physics at the University of Würzburg since December 15, 2004 . There he deals with the electronic structure of complex solids, especially the sudden appearance of certain material properties through quantum effects.

Web links

• physik.uni-wuerzburg.de
• Article about Claessen's work at idw
• Literature by and about Ralph Claessen in the catalog of the German National Library