Abstract
AbstractIn this work we present an analytical and numerical result of the dielectric function of electronic systems with Rashba spin‐orbit interaction. By solving the quantum equation of motion for the electron density matrix, we obtained the dielectric function in the mean‐field approximation. It is shown that when the momentum transfer q for an electronic transition is smaller than a critical value characterized by the spin‐orbit interaction, the static dielectric function increases with q, indicating on‐set of a new collective state. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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