Spin-electricity conversion induced by spin injection into topological insulators

Y. Shiomi, K. Nomura, Y. Kajiwara, K. Eto, M. Novak, Kouji Segawa, Yoichi Ando, E. Saitoh

Research output: Contribution to journalArticlepeer-review

214 Citations (Scopus)

Abstract

We report successful spin injection into the surface states of topological insulators by using a spin pumping technique. By measuring the voltage that shows up across the samples as a result of spin pumping, we demonstrate that a spin-electricity conversion effect takes place in the surface states of bulk-insulating topological insulators Bi1.5Sb0.5Te1.7Se1.3 and Sn-doped Bi2Te2Se. In this process, the injected spins are converted into a charge current along the Hall direction due to the spin-momentum locking on the surface state.

Original languageEnglish
Article number196601
JournalPhysical review letters
Volume113
Issue number19
DOIs
Publication statusPublished - 2014 Nov 3

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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