AI 中文总结
该研究探究手性120°奈尔磁结构对过渡金属二硫化物单层的邻近效应，构建有效k·p模型，预测反常反铁磁霍尔效应，还提出可通过光学方法测量手性磁化的面内取向分布。
AI 中文摘要
我们研究了 commensurate 手性120°奈尔磁结构对过渡金属二硫化物单层（TMD ML）输运和光学性质的邻近效应。扩大的磁单胞导致布里渊区折叠，实现了高效的谷间自旋翻转散射。基于六带紧束缚模型，我们构建了有效k·p模型，用于描述TMD ML中电荷载流子与手性磁化的耦合。我们预测了传导电子的反常反铁磁霍尔效应（AHE），并结合反常速度、侧跳和偏斜散射贡献的相互作用对其进行了描述。尽管净磁化强度为零，手性磁化的邻近效应还会导致由时间反演对称性关联的两个谷中激子共振的混合与分裂。最后，我们证明了可通过法拉第旋转和入射线偏振光的椭偏度来测量手性磁化的面内取向分布。
英文摘要
We consider the proximity effects of a commensurate chiral $120^{\circ}$ Néel magnetic structure on the transport and optical properties of a transition metal dichalcogenide monolayer (TMD ML). The enlarged magnetic unit cell leads to the folding of the Brillouin zone and enables efficient intervalley spin-flip scattering. Starting from a six band tight binding model, we develop an effective $k\cdot p$ model, which describes the coupling between charge carriers in the TMD ML and the chiral magnetization. We predict the anomalous antiferromagnetic Hall effect (AHE) for conduction electrons and describe it accounting for the interplay between anomalous velocity, side jump, and skew scattering contributions. The proximity of the chiral magnetization also leads to the mixing and splitting of the exciton resonances in the two valleys which are related by the time reversal symmetry despite zero net magnetization. Finally, we demonstrate the possibility to measure the distribution of in-plane orientation of the chiral magnetization through Faraday rotation and the ellipticity of incident linearly polarized light.
Comments8 pages, 3 figures, joint submission with "Valley-controlled chiral magnetism in transition metal dichalcogenide monolayers" by the same authors
