Spin-Hall insulator.

  title={Spin-Hall insulator.},
  author={Shuichi Murakami and Naoto Nagaosa and Shou-Cheng Zhang},
  journal={Physical review letters},
  volume={93 15},
Recent theories predict dissipationless spin current induced by an electric field in doped semiconductors. Nevertheless, the charge current is still dissipative in these systems. In this work, we theoretically predict the dissipationless spin-Hall effect, without any accompanying charge current, in some classes of band insulators, including zero-gap semiconductors such as HgTe and narrow-gap semiconductors such as PbTe. This effect is similar to the quantum-Hall effect in that all the states… Expand
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