Keywords: spin-charge conversion, BiSb alloys, spin pumping
Bi1-xSbx alloys exhibit a wide variety of characteristics. For example, whereas pure Bi (x=0) is a semimetal material with a Dirac fermion, Bi1-xSbx alloys with x=0.07-0.22 are three dimensional topological insulators. Interestingly, semimetal Bi1-xSbx alloys (x=0-0.07) and topological insulator Bi1-xSbx 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 Bi1-xSbx alloys by using spin pumping.
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