Generating spin currents in semiconductors with the spin Hall effect.

  title={Generating spin currents in semiconductors with the spin Hall effect.},
  author={Vanessa Sih and Wayne Heung Lau and Robert C. Myers and Viva R. Horowitz and Arthur C. Gossard and David D. Awschalom},
  journal={Physical review letters},
  volume={97 9},
We investigate electrically induced spin currents generated by the spin Hall effect in GaAs structures that distinguish edge effects from spin transport. Using Kerr rotation microscopy to image the spin polarization, we demonstrate that the observed spin accumulation is due to a transverse bulk electron spin current, which can drive spin polarization nearly 40 microns into a region in which there is minimal electric field. Using a model that incorporates the effects of spin drift, we determine… 
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Current-Induced Spin Polarization in Nonmagnetic Semiconductors
  • Y. Qi, M. Flatté
  • Physics
    Journal of Superconductivity and Novel Magnetism
  • 2018
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Since the electrons have an internal degree of freedom, spin, they are characterized not only by charge density and electric current, but also by spin density and spin current. The spin current is