[14p-P10-1~98] 10 Spintronics and Magnetics（Poster）

▲ [14p-P10-11] Spin-charge conversion in Bi_1-xSb_x layer

〇YUICHIRO ANDO¹, Ryouhei Kumamoto¹, Sergey Dushenko¹, Teruya Shinjo¹, Masashi Shiraishi¹ (1.Kyoto Univ.)

Keywords:spin-charge conversion, BiSb alloys, spin pumping

Bi_1-xSb_x alloys exhibit a wide variety of characteristics. For example, whereas pure Bi (x=0) is a semimetal material with a Dirac fermion, Bi_1-xSb_x alloys with x=0.07-0.22 are three dimensional topological insulators. Interestingly, semimetal Bi_1-xSb_x alloys (x=0-0.07) and topological insulator Bi_1-xSb_x alloys (x=0.07-0.22) have the same crystal structure, which enables a systematical investigation of spin-charge conversion properties without change in the crystal structure. In this study, we investigated spin-charge conversion efficiency in Bi_1-xSb_x alloys by using spin pumping.