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塩見 雄毅*; 野村 健太郎*; 梶原 瑛祐*; 江藤 数馬*; Novak, M.*; 瀬川 耕司*; 安藤 陽一*; 齊藤 英治
Physical Review Letters, 113(19), p.196601_1 - 196601_5, 2014/11
被引用回数:274 パーセンタイル:99.03(Physics, Multidisciplinary)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 BiSbTeSe and Sn-doped BiTeSe. 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.