Transport and spin conversion of multi-carriers in semimetal bismuth
  In this paper, we report on the investigation of (1) the transport properties of multi-carriers in semi-metal Bi and (2) the spin conversion physics in this semimetal system in a ferrimagnetic insulator, yttrium-iron-garnet. Hall measurements reveal that electrons and holes co-exist 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. 
Hiroyuki Emoto (1,2), Yuichiro Ando (1), Gaku Eguchi (1,5), Ryo   Ohshima (1,2) Eiji Shikoh (3), Yuki Fuseya (4), Teruya Shi...
cond-mat.mtrl-sci