Spin-electricity conversion induced by spin injection into topological insulators.
نویسندگان
چکیده
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 Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) and Sn-doped Bi(2)Te(2)Se. 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.
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ورودعنوان ژورنال:
- Physical review letters
دوره 113 19 شماره
صفحات -
تاریخ انتشار 2014