2023/08/29 by Shuhan Liu, Liu, Shuhan, Shaojie Hu +5 · 2 citations
Engineering · Materials Science · #2D Materials and Applications #Advanced Memory and Neural Computing #FOS: Physical sciences #Graphene research and applications #Materials Science (cond-mat.mtrl-sci)
paper · pdf · doi:10.48550/arxiv.2308.14977
openalex publication_date 2023/08/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent discovery of 2D van der Waals (vdW) magnetic materials has spurred progress in developing advanced spintronic devices. A central challenge lies in enhancing the spin-conversion efficiency for building spin-logic or spin-memory devices. We systematically investigated the anomalous Hall effect and anomalous Nernst effect in above-room-temperature van der Waals ferromagnet FeGaTe with perpendicular anisotropy, uncovering significant spin-conversion effects. The anomalous Hall effect demonstrated an efficient electric spin-charge conversion, with a notable spin Hall angle of 6 % - 10.38 %. The temperature-dependent behavior of the anomalous Nernst voltage primarily results from the thermo-spin conversion. Uniquely, we have experimentally achieved thermo-spin polarization values of over 690 % at room temperature and extremely large of 4690 % at about 93 K. This study illuminates the potential of vdW ferromagnets in advancing efficient spin conversion devices.