Regensburg 2007 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 13: Poster 1

HL 13.1: Poster

Montag, 26. März 2007, 15:00–17:30, Poster A

Anomalously localized electronic states in three-dimensional disordered systems — •Philipp Cain and Michael Schreiber — Institut für Physik, Technische Universität, D-09107 Chemnitz

We study the Anderson model of localization at the metal-insulator transition in the band centre of three-dimensional disordered samples. For the critical disorder we determine a large number of wave functions of the model and study the distribution of the wave function amplitudes. Deviations from the scaling of multifractal correlation functions allow us to discriminate anomalously localized states from the usual critical states. The thus identified anomalously localized states lead to deviations of the critical properties and have to be eliminated from the ensemble average for a characterization of criticality.