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TT: Tiefe Temperaturen

TT 19: Transport - Nanoelectronics I: Spintronics and Magnetotransport

TT 19.4: Talk

Monday, March 7, 2005, 10:45–11:00, TU H3027

Investigation of a mesoscopic spin-ratchet — •Andreas Pfund and Klaus Richter — Institut für Theoretische Physik, Universität Regensburg, Germany

We consider the possibility to generalize the well known ratchet-mechanism to generate a spin-polarized current between electronic reservoirs. The effect of spin-orbit interaction is in particular considered. As a starting point, transport through a confined 2DEG in presence of a ’ratchet-potential’, magnetic field and spin-orbit interaction is studied in a coherent and ballistic picture. The next step is to investigate the general non-equilibrium situation in contact with a heat-bath, introducing dissipation and thermal noise.