Regensburg 2007 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 28: Transport - Poster Session

TT 28.38: Poster

Donnerstag, 29. März 2007, 14:00–17:45, Poster A

Collective charge and spin excitations in interacting 2DEG with spin-orbit coupling — •Sergej Konschuh and Mikhail Pletyukhov — Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany

We present the analytic expressions for the charge and spin density response functions of the two-dimensional electron gas (2DEG) with Rashba spin-orbit (SO) coupling. Taking into account the Coulomb interaction in the random phase approximation (RPA), we study the dispersions of the collective charge and spin-polarization modes. Special attention is devoted to the role of the spin-charge mixing in the density matrix response function.