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SFB 195:  Localization of Electrons in Macroscopic and Microscopic Systems

Subject Area Physics
Term from 1992 to 2003
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 5472449
 
The localization of electrons in condensed matter, i. e. electron binding in a finite volume, can be caused by different mechanisms. Whereas individual mechanisms are known at least qualitatively, their interplay, which appears frequently in nature (e. g. disorder and electronic correlations) is not well understood. We study the metal-nonmetal transition in different macroscopic systems experimentally and theoretically. The long term goal of the cooperation between physicists and chemists in this collaborative research centre is to find a synthesis between the more statistical description of localization in macroscopic systems and the quantum-chemical description of the localization in microscopic systems based on atomic and molecular orbitals. For this purpose, experiments are used to probe the properties of base and ligand stabilized clusters and results are compared to quantum chemical calculations. Finally, electron transport and localization in mesoscopic and nanoscopic systems for which individual charge effects (e. g. Coulomb blockade) or interference of electron waves are important, is studied.
DFG Programme Collaborative Research Centres

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