Drift transport of spin-polarized electrons in GaAs

H. Sanada, I. Arata, Y. Ohno, K. Ohtani, Z. Chen, K. Kayanuma, Y. Oka, F. Matsukura, H. Ohno

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6 Citations (Scopus)


We studied the transport properties of spin-polarized conduction electrons in GaAs by time-resolved photoinjection and photoluminescence polarization measurements. Under an electric field of a few kV/cm, the degree of the spin polarization considerably decreases during drift transport over the distance shorter than 4 μm. Spin relaxation by D'yakonov-Perel' mechanism is suggested to be the cause of such a rapid spin depolarization for hot electrons under a moderate electric field at low temperatures.

Original languageEnglish
Pages (from-to)217-219
Number of pages3
JournalJournal of Superconductivity and Novel Magnetism
Issue number1
Publication statusPublished - 2003


  • Spin dynamics
  • spin relaxation
  • Spin transport
  • Time-resolved optical spectroscopy


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