论文标题
van der Waals异质结构中的扭角控制共线效应
Twist Angle Controlled Collinear Edelstein Effect in van der Waals Heterostructures
论文作者
论文摘要
通过使用电流的应用是空间均匀的自旋极化的产生，是对称性旋转的基本表现 - 固态系统中的轨道耦合（SOC），这是基于广泛的自旋应用程序的基础。在这里，我们从理论上表明，具有接近性SOC的扭曲范德华异质结构是卓越的候选者，因为它们高度可调的动量空间旋转质地，因此可以实现异国情调的旋转传输现象。具体而言，我们预测石墨烯/VI组二甲藻元化双层支持可以通过扭转角控制来操纵的室温自旋响应。对于临界扭转角，将非平衡的自旋密度平行于施加的电流。这种效果是针对扭转障碍的鲁棒，具有石墨烯/$ \ text {wse} _ {2} $具有$θ_{c} \ simeq 14^{\ circ} $的关键角度（纯粹的共线响应）。提出了一种简单的电气检测方案，以分离共线埃德尔斯坦效应。
The generation of spatially homogeneous spin polarization by application of electric current is a fundamental manifestation of symmetry-breaking spin--orbit coupling (SOC) in solid-state systems, which underpins a wide range of spintronic applications. Here, we show theoretically that twisted van der Waals heterostructures with proximity-induced SOC are candidates par excellence to realize exotic spin-charge transport phenomena due to their highly tunable momentum-space spin textures. Specifically, we predict that graphene/group-VI dichalcogenide bilayers support room temperature spin--current responses that can be manipulated via twist-angle control. For critical twist angles, the non-equilibrium spin density is pinned parallel to the applied current. This effect is robust against twist-angle disorder, with graphene/$\text{WSe}_{2}$ possessing a critical angle (purely collinear response) of $θ_{c} \simeq 14^{\circ}$. A simple electrical detection scheme to isolate the collinear Edelstein effect is proposed.
