Regensburg 2007 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 30: Poster II

DY 30.45: Poster

Donnerstag, 29. März 2007, 16:00–18:00, Poster D

Quantum mechanical model of the conductivity of alkali glasses — •Joachim Sohns and Michael Schulz — Institut für Theoretische Physik, Universität Ulm, 89069 Ulm, Germany

Our aim is to reproduce the mixed alkali effect and other important properties of the conductivity of alkali glasses in the framework of qunatum mechanics. Our model includes direct interaction between the particles, static interaction between the glass and the ions and the interaction between the ions and phonons in the glass. Because the system is assumed to be out of thermal equilibrium, we use the Keldysh technique and calculate two particles Green's functions. The conductivity of the system follows from the Kubo formula.