Ultrafast extrinsic spin-Hall currents

E. Ya. Sherman; Ali Najmaie; H. M. van Driel; Arthur L. Smirl; J. E. Sipe

doi:10.1016/j.ssc.2006.07.009

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Ultrafast extrinsic spin-Hall currents

E. Ya. Sherman·Ali Najmaie·H. M. van Driel·Arthur L. Smirl·J. E. Sipe

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Abstract

We consider the possibility of ultrafast extrinsic spin-Hall currents, generated by skew scattering following the optical injection of charge or pure spin currents. We propose a phenomenological model for this effect in quantum well structures. An injected charge current leads to a spin-Hall-induced pure spin current, and an injected pure spin current leads to a spin-Hall-induced charge current. The resulting spin or charge accumulation can be measured optically.

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E. Ya. Sherman, Ali Najmaie, H. M. van Driel, Arthur L. Smirl, J. E. Sipe. 2006-06-28. Ultrafast extrinsic spin-Hall currents. https://doi.org/10.1016/j.ssc.2006.07.009

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