Large spin to charge conversion in antiferromagnetic Weyl semimetal Mn3Sn
Yu Tian, Hao Wu, Haoran He, Chenyang Guo, Chi Fang, Peng Zhang, Kin Wong, Shijie Xu, Xiufeng Han, Kang L. Wang
Abstract
The Weyl antiferromagnet Mn3Sn has recently attracted significant attention as it is not only a novel magnetic quantum material of fundamental interest, but it also opens opportunities to investigate a number of exotic spin-dependent transports for practical antiferromagnetic devices. Here, we report the large spin to charge conversion observed in YIG/Mn3Sn. Evidenced by both spin Seebeck and spin pumping measurements, the spin to charge conversion efficiency of Mn3Sn is found ∼2.5 times of that for the conventional heavy metal Ta. Our results suggest a promising potential for employing a topological non-trivial antiferromagnet to achieve more efficient spin to charge conversion than conventional metallic materials.