Giant Extrinsic Spin Hall Effect due to Rare-Earth Impurities
نویسنده
چکیده
We investigate the extrinsic spin Hall effect in the electron gas model due to magnetic impurities, by focusing on Ceand Yb-impurities. In the dilute limit, the skew scattering term dominates the side jump term. For Ce-impurities, the spin Hall angle αSH due to skew scattering is given by −8πδ2/7, where δ2 (≪ 1) is the phase shift for d (l = 2) partial wave. Since αSH reaches O(10 ) if δ2 > ∼ 0.03, considerably large spin Hall effect is expected to emerge in metals with rare-earth impurities. The present study provides the highly efficient way to generate a spin current. Giant Extrinsic Spin Hall Effect due to Rare-Earth Impurities 2
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