反向
自旋电子学
自旋(空气动力学)
电荷(物理)
凝聚态物理
物理
费米能级
单层
材料科学
量子力学
几何学
纳米技术
数学
电子
热力学
铁磁性
作者
Rui Song,Ning Hao,Ping Zhang
出处
期刊:Physical review
日期:2021-09-29
卷期号:104 (11)
被引量:7
标识
DOI:10.1103/physrevb.104.115433
摘要
We propose that the hybridization between two sets of Rashba bands can lead to the unconventional Rashba band structures where the two Fermi circles from different bands own in-plane helical spin textures with the same chiralities, and possess group velocities with the same directions. Through the first-principles calculations, we predict that monolayer ${\mathrm{OsBi}}_{2}$ hosts such simple and pure unconventional Rashba bands near Fermi energy. Under the weak spin injection, we show that the two Fermi circles from the unconventional Rashba bands both give the positive contributions to the spin-to-charge conversion and thus induce the giant inverse Rashba-Edelstein Effect with large conversion efficiency, which is very different from the conventional Rashba-Edelstein Effect. Our studies not only provide a promising material of monolayer ${\mathrm{OsBi}}_{2}$ to possess unconventional Rashba bands, but also demonstrate its potential application to achieve highly efficient spin-to-charge conversion in spintronics.
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