In this paper, we report on the investigation of (i) the transport properties of multicarriers in semimetal Bi and (ii) the spin conversion physics in this semimetal system on a ferrimagnetic insulator, yttrium-iron-garnet. Hall measurements reveal that electrons and holes coexist in the Bi, with electrons being the dominant carrier. The results of a spin conversion experiment corroborate the results of the Hall measurement; in addition, the inverse spin Hall effect governs the spin conversion in the semimetal/insulator system. This study provides further insights into spin conversion physics in semimetal systems.
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Emoto et al. (2016) studied this question.
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