AI 中文总结
本文结合群论与从头算模拟，揭示二维反铁磁体中矢量自旋手性可作为控制非相对论埃德尔斯坦效应的关键参数，为电调控磁化提供了不依赖自旋轨道耦合的新途径。
AI 中文摘要
电荷电流诱导的磁矩积累——埃德尔斯坦效应因其在自旋电子学中的潜在应用而受到广泛关注。尽管多数现有研究聚焦于依赖重元素存在的自旋轨道耦合（SOC）诱导的埃德尔斯坦响应，但可应用于更广泛材料体系的非相对论埃德尔斯坦效应（无SOC情况下）却在很大程度上未被探索。本文结合群论与从头算数值模拟研究，表明矢量自旋手性可作为反铁磁体系中非相对论埃德尔斯坦响应的有效控制参数。除自旋自由度外，还探究了电流诱导磁矩的轨道角动量贡献（称为轨道埃德尔斯坦效应），其遵循与自旋对应物不同的对称性约束。微观上，矢量自旋手性k产生类塞曼的电子带几何量，如反常自旋/轨道极化率和贝里连接极化率，这些量支配着非相对论埃德尔斯坦响应。本研究确定矢量自旋手性为实现和调控非相对论埃德尔斯坦效应的关键磁有序参数，开辟了不依赖SOC效应电调控磁化的新途径。
英文摘要
Charge current-induced magnetic moment accumulation-Edelstein effect has been extensively attracting attention for its promising applications in spintronics. While most prior works focus on the spin-orbit coupling (SOC) induced Edelstein responses that rely on the presence of heavy elements, the nonrelativistic Edelstein effect (in the absence of SOC) that could be applied in a broader material family has been largely unexplored. Here, we perform a combined group-theoretical and ab initio numerical simulation study to show that vector spin chirality could serve as an effective control parameter of nonrelativistic Edelstein responses in antiferromagnetic system. In addition to spin degree of freedom, we also explore the orbital angular momentum contributions to current-induced magnetic moments (dubbed orbital Edelstein effect), which obey distinct symmetry constraints from the spin counterpart. Microscopically, vector spin chirality k gives rise to electronic and Zeeman-like band-geometric quantities, such as the anomalous spin/orbital polarizability and the Berry connection polarizability, which govern the nonrelativistic Edelstein responses. Our work identifies vector spin chirality as a key magnetic order parameter to enable and tune nonrelativistic Edelstein effects, and uncovers a new route toward electrically controlling magnetization without relying on SOC effect.
Comments11 pages and 7 figures, comments welcome
