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Spin-Dephasing Anisotropy for Electrons in a Diffusive Quasi-1D GaAs Wire

  • J. Liu
  • T. LastEmail author
  • E. J. Koop
  • S. Denega
  • B. J. van Wees
  • C. H. van der Wal
Open Access
Review Paper

Abstract

We present a numerical study of dephasing of electron spin ensembles in a diffusive quasi-one-dimensional GaAs wire due to the D’yakonov–Perel’ spin-dephasing mechanism. For widths of the wire below the spin precession length and for equal strength of Rashba and linear Dresselhaus spin–orbit fields a strong suppression of spin-dephasing is found. This suppression of spin-dephasing shows a strong dependence on the wire orientation with respect to the crystal lattice. The relevance for realistic cases is evaluated by studying how this effect degrades for deviating strength of Rashba and linear Dresselhaus fields, and with the inclusion of the cubic Dresselhaus term.

Keywords

Semiconductor spintronics Two-dimensional electron gas Spin–orbit coupling Spin relaxation 

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Copyright information

© The Author(s) 2009

Authors and Affiliations

  • J. Liu
    • 1
  • T. Last
    • 1
    Email author
  • E. J. Koop
    • 1
  • S. Denega
    • 1
  • B. J. van Wees
    • 1
  • C. H. van der Wal
    • 1
  1. 1.Physics of Nanodevices Group, Zernike Institute for Advanced MaterialsUniversity of GroningenGroningenThe Netherlands

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