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Large spin to charge conversion in antiferromagnetic Weyl semimetal Mn3Sn
APL Materials ( IF 6.1 ) Pub Date : 2021-04-20 , DOI: 10.1063/5.0045627
Tian Yu 1, 2 , Hao Wu 1 , Haoran He 1 , Chenyang Guo 3 , Chi Fang 3 , Peng Zhang 1 , Kin L. Wong 1 , Shijie Xu 1 , Xiufeng Han 3 , Kang L. Wang 1
Affiliation  

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.

中文翻译:

反铁磁Weyl半金属Mn3Sn中的大自旋至电荷转换

Weyl反铁磁体Mn 3 Sn最近引起了广泛的关注,因为它不仅是一种具有基本意义的新型磁性量子材料,而且还为研究许多实际的反铁磁器件的自旋依赖的输运提供了机会。在这里,我们报道了在YIG / Mn 3 Sn中观察到的大的自旋至电荷转换。通过自旋塞贝克测量和自旋泵浦测量可知,发现Mn 3 Sn的自旋至电荷转换效率约为传统重金属Ta的2.5倍。我们的结果表明,使用拓扑非平凡的反铁磁体来实现比常规金属材料更有效的自旋至电荷转换的潜力很大。
更新日期:2021-04-30
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