Inhaltszusammenfassung

We investigate the spin-current linear response conductivity tensor to an electric field in a paramagnetic two-dimensional electron gas with both rashba and dresselhaus spin-orbit coupling in the weak scattering regime within the born approximation. in the usual sample parameters, and for cross-sectional size smaller than the spin-coherence length, the spin-hall conductivity depends only on the sign of the difference in magnitude of the rashba and dresselhaus coupling except within a narrow w...We investigate the spin-current linear response conductivity tensor to an electric field in a paramagnetic two-dimensional electron gas with both rashba and dresselhaus spin-orbit coupling in the weak scattering regime within the born approximation. in the usual sample parameters, and for cross-sectional size smaller than the spin-coherence length, the spin-hall conductivity depends only on the sign of the difference in magnitude of the rashba and dresselhaus coupling except within a narrow window where both coupling strengths are equal. we also find that a spin current is generated in the direction of the driving field for a non-zero dresselhaus term. possible experimental setups for its detection, taking into account the finite mobility and typical parameters of current samples, are discussed.» weiterlesen» einklappen

Autoren

Klassifikation

DFG Fachgebiet:
3.17 - Theoretische Chemie

DDC Sachgruppe:
Physik