Chiral materials, similarly to human hands, have distinguishable right-handed and left-handed enantiomers which may behave differently in response to external stimuli. Here, we use for the first time an approach based on the density functional theory (DFT)+PAOFLOW calculations to quantitatively estimate the so-called collinear Rashba–Edelstein effect (REE) that generates spin accumulation parallel to charge current and can manifest as chirality-dependent charge-to-spin conversion in chiral crystals. Importantly, we reveal that the spin accumulation induced in the bulk by an electric current is intrinsically protected by the quasi-persistent spin helix arising from the crystal symmetries present in chiral systems with the Weyl spin–orbit coupling. In contrast to conventional REE, spin transport can be preserved over large distances, in agreement with the recent observations for some chiral materials. This allows, for example, the generation of spin currents from spin accumulation, opening novel routes for the design of solid-state spintronics devices.

与人手类似，手性材料具有可区分的右手和左手对映体，它们可能对外部刺激做出不同的反应。在这里，我们首次使用基于密度泛函理论 (DFT) + PAOFLOW 计算的方法来定量估计所谓的共线 Rashba-Edelstein 效应 (REE)，该效应产生与充电电流平行的自旋积累，并可以表现为手性- 手性晶体中依赖于电荷到自旋的转换。重要的是，我们揭示了由电流在本体中引起的自旋积累本质上受到准持久自旋螺旋的保护，准持久自旋螺旋产生于具有 Weyl 自旋轨道耦合的手性系统中存在的晶体对称性。与传统的 REE 相比，自旋传输可以在很远的距离内保持，与最近对一些手性材料的观察结果一致。例如，这允许从自旋积累中产生自旋电流，为固态自旋电子器件的设计开辟了新的途径。