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TT: Tiefe Temperaturen

TT 22: Postersitzung III: Syst. korr. Elektr.: Theorie II (1-15), Metall-Isol.- und Phasenüberg
änge (16-33), SL: Massivmat., Bandl., Pinning, Vortexdyn., Transport, Korngr. (34-43), Niedrigdim. Syst., Magnetotransport (44-63)

TT 22.24: Poster

Donnerstag, 14. März 2002, 14:00–17:30, A

Conductivity in quasi two-dimensional systems — •Klaus Morawetz — Max-Planck-Institute for the Physics of Complex Systems, Noethnitzer Str. 38, 01187 Dresden, Germany

The quantum kinetic equation including interference or localization is used to calculate the conductivity in a quasi-two-dimensional electron system. Recent experiments on metal-insulator transitions (MIT) at lowest temperatures are compared with results from the quantum transport theory. The MIT transition is possible to explain by a Mott-effect accompanied by weak localization.