Extrinsic spin Hall effect induced by iridium impurities in copper.

@article{Niimi2011ExtrinsicSH,
  title={Extrinsic spin Hall effect induced by iridium impurities in copper.},
  author={Yasuhiro Niimi and Madoka Morota and Duo Helen Wei and Cyrile Deranlot and Mario Basleti{\'c} and Amir Hamzi{\'c} and Albert Fert and Yoshichika Otani},
  journal={Physical review letters},
  year={2011},
  volume={106 12},
  pages={126601}
}
We study the extrinsic spin Hall effect induced by Ir impurities in Cu by injecting a pure spin current into a CuIr wire from a lateral spin valve structure. While no spin Hall effect is observed without Ir impurity, the spin Hall resistivity of CuIr increases linearly with the impurity concentration. The spin Hall angle of CuIr, (2.1±0.6)% throughout the concentration range between 1% and 12%, is practically independent of temperature. These results represent a clear example of predominant… CONTINUE READING

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