Berlin 2005 – scientific programme

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TT: Tiefe Temperaturen

TT 6: Correlated Electrons - (General) Theory I

TT 6.7: Talk

Friday, March 4, 2005, 15:30–15:45, TU H2053

Influence of Electron Correlations on Electron Transfer — •Sabine Tornow, Ning-Hua Tong, and Ralf Bulla — Theoretische Physik III, Institut für Physik, Universität Augsburg, 86135 Augsburg, Germany

Electron transfer is a basic chemical process and is found, e.g. in corrosion of metals, enzymatic activities, cell metabolism or photosynthesis. The donor and acceptor sites may be transition metal ions (e.g., in some basic biological processes) and are strongly coupled to environmental modes (bath). To include electron correlations and multi electron transfer we propose a new model which extends the spin-boson model. We calculate static and dynamic properties using Wilsons Numerical Renormalization Group method. We discuss the thermal transition rate and discuss polaron, bipolaron and exciton formation.