Generation of spin current and polarization under dynamic gate control of spin-orbit interaction in low-dimensional semiconductor systems

CS Tang, AG Mal'shukov, Koung-An Chao

Research output: Contribution to journalArticlepeer-review

Abstract

Based on the Keldysh formalism, the Boltzmann kinetic equation and the drift-diffusion equation have been derived for studying spin-polarization flow and spin accumulation under effect of the time-dependent Rashba spin-orbit interaction in a semiconductor quantum well. The time-dependent Rashba interaction is provided by time-dependent electric gates of appropriate shapes. Several examples of spin manipulation by gates have been considered. Mechanisms and conditions for obtaining the stationary spin density and the induced rectified dc spin current are studied.
Original languageEnglish
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume71
Issue number19
DOIs
Publication statusPublished - 2005

Subject classification (UKÄ)

  • Condensed Matter Physics

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