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Ultrafast Photocurrent Measurements of Bulk-Conduction Induced Spin Hall Effect in the Topological Insulator Bi2Se3

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Abstract

We have measured the temporally-resolved helicity-dependent photocurrent at the Bi2Se3 topological insulator and identified that the skew scattering induces spin Hall effect while the spin suffers Elliott-Yafet relaxation at the bulk state of the Bi2Se3.

© 2018 The Author(s)

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