Dresden 2003 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 49: Poster II

HL 49.19: Poster

Donnerstag, 27. März 2003, 16:30–19:00, HSZ/P2

Ballistic Transport in Mesoscopic Rectifyers — •Oliver Bendix, Ragnar Fleischmann, and Theo Geisel — Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-37073 Göttingen

Recent experiments on symmetry-broken mesoscopic semiconductor structures on a two-dimensional electron gas have revealed an amazing rectifying effect in the transverse current-voltage characteristics with promising prospects for future applications [1]. In such systems, where the typical dimensions are shorter than the mean free path of the electrons, the electrons travel across the system ballistically. We present a model based on purely ballistic transport, which takes into account the dependence on energy of the number of current-carrying modes that gives a simple explanation of the rectifying effect [2].

A. M. Song et al., PRL 80 (1998) 3831
R. Fleischmann and T. Geisel, PRL 89 (2002) 16804