Abstract
AbstractWe present calculations of the frequency‐dependent spin susceptibility tensor of a two‐dimensional electron gas with competing Rashba and Dresselhaus spin‐orbit interaction. It is shown that the interplay between both types of spin‐orbit coupling gives rise to an anisotropic spectral behavior of the spin density response function which is significantly different from that of vanishing Rashba or Dresselhaus case. Strong resonances are developed in the spin susceptibility as a consequence of the angular anisotropy of the energy spin‐splitting. This characteristic optical modulable response may be useful to experimentally probe spin accumulation and spin density currents in such systems. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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