Spin and Charge Interconversion in Dirac-Semimetal Thin Films

Understanding spin-charge interconversion (SCI) in topological quantum materials, such as Dirac semimetals, is important for developing energy-efficient spintronic memory. This article reports room-temperature measurements of SCI at the interface between an archetypal semimetal (Cd${}_{3}$As${}_{2}$) and a metallic ferromagnet (Ni${}_{0.8}$Fe${}_{0.2}$). Analysis shows that can have efficiency similar to heavy metals insulators. Surprisingly, highest associated with extrinsic effects due imperfect (oxidized) interfaces. These results suggest caution attributing spin transport solely states Cd${}_{3}$As${}_{2}$.