Highly efficient field-free switching of perpendicular yttrium iron garnet with collinear spin current

Yttrium iron garnet, a material possessing ultralow magnetic damping and extraordinarily long magnon diffusion length, is the most widely studied magnetic insulator in spintronics and magnonics. Field-free electrical control of perpendicular yttrium iron garnet magnetization with considerable effici...

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Veröffentlicht in:Nature communications 2024-04, Vol.15 (1), p.3201-3201, Article 3201
Hauptverfasser: Yang, Man, Sun, Liang, Zeng, Yulun, Cheng, Jun, He, Kang, Yang, Xi, Wang, Ziqiang, Yu, Longqian, Niu, Heng, Ji, Tongzhou, Chen, Gong, Miao, Bingfeng, Wang, Xiangrong, Ding, Haifeng
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Sprache:eng
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Zusammenfassung:Yttrium iron garnet, a material possessing ultralow magnetic damping and extraordinarily long magnon diffusion length, is the most widely studied magnetic insulator in spintronics and magnonics. Field-free electrical control of perpendicular yttrium iron garnet magnetization with considerable efficiency is highly desired for excellent device performance. Here, we demonstrate such an accomplishment with a collinear spin current, whose spin polarization and propagation direction are both perpendicular to the interface. Remarkably, the field-free magnetization switching is achieved not only with a heavy-metal-free material, Permalloy, but also with a higher efficiency as compared with a typical heavy metal, Pt. Combined with the direct and inverse effect measurements, we ascribe the collinear spin current to the anomalous spin Hall effect in Permalloy. Our findings provide a new insight into spin current generation in Permalloy and open an avenue in spintronic devices. Field-free switching of the perpendicular yttrium iron garnet magnetization with considerable efficiency is desired for device performance. Here, the authors demonstrate such an accomplishment with a collinear spin current in Py.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-024-47577-x