Regensburg 2000 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 17: Postersitzung II: Pinning und Vortexdynamik (1-8), Supraleitung: Theorie (9-13), Korrelierte Elektronen (14-48), Niederdimensionale Systeme (49-68), Quantenflüssigkeiten (69-75)

TT 17.35: Poster

Mittwoch, 29. März 2000, 14:30–18:00, A

Chern-Simons theory for electrons in high Landau levels — •Stefan Scheidl and Bernd Rosenow — Inst. Theoret. Physik, Univ. Köln

We develop a Chern-Simons-Ginzburg-Landau theory to describe a two-dimensional electron gas in intermediate magnetic fields. From this theory the formation of a charge-density-wave (CDW) state at half filling of high Landau levels is derived. The CDW consists of incompressible stripes with diamagnetic edge currents. The alignment of the CDW in a tilted magnetic field is studied and found to be in agreement with recent experiments.