Regensburg 2007 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 23: Nanoelectronics II - Spintronics and Magnetotransport
TT 23.5: Talk
Thursday, March 29, 2007, 10:30–10:45, H19
Crossover from diffusive to non-diffusive dynamics in the two-dimensional electron gas with Rashba spin-orbit coupling — •Mikhail Pletyukhov — Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany
We present the calculation of the density matrix response function of the two-dimensional electron gas with Rashba spin-orbit interaction characterized by the coupling constant αR, which is applicable in a wide range of parameters covering the diffusive (vF q, ω ≪ τ−1) and non-diffusive (vF q, ω ≫ τ−1), the dirty (αR kF ≪ τ−1) and the clean (αR kF ≫ τ−1) limits. A description of the crossover between the different regimes is thus provided as well. On the basis of the derived microscopic expressions we study the propagating charge and spin-polarization modes in the clean, non-diffusive regime, which is achievable in the modern experiments.