AI 中文总结
研究二维簇模型中结构手性向电子手性的转化，通过评估ETM和埃德尔斯坦效应，发现其对结构参数呈反对称非单调依赖，手性编码在电子态对称特征，明确相关微观联系及关键要素。
AI 中文摘要
我们研究了在表面诱导极场作用下，由三角晶格核心和三个棒状延伸组成的二维簇模型中结构手性如何转化为电子手性。通过评估电环形单极子（ETM）和埃德尔斯坦效应，我们发现这两个量对控制簇几何形状的结构参数呈现反对称和非单调依赖。尽管态的总密度几乎不受结构变形影响，但ETM分辨谱显著变化，表明手性编码在电子态的对称特征而非整体电子谱中。实空间分析表明，诱导的ETM集中在顶点和棒附近，而埃德尔斯坦响应更广泛地延伸到核心区域。此外，参数分解分析确定自旋轨道耦合、表面诱导宇称混合和结构手性是这两种现象的基本要素。我们的结果阐明了人工表面纳米结构中结构手性、电子手性和手性输运响应之间的微观联系。
英文摘要
We investigate how structural chirality is converted into electronic chirality in a two-dimensional cluster model consisting of a triangular-lattice core and three rod-like extensions under a surface-induced polar field. By evaluating the electric toroidal monopole (ETM) and the Edelstein effect, we show that both quantities exhibit antisymmetric and nonmonotonic dependence on the structural parameter controlling the cluster geometry. While the total density of states is almost unaffected by the structural deformation, the ETM-resolved spectrum changes significantly, indicating that chirality is encoded in the symmetry character of the electronic states rather than in the overall electronic spectrum. Real-space analysis reveals that the induced ETM is concentrated near the vertices and rods, whereas the Edelstein response extends more broadly into the core region. Furthermore, a parameter-decomposition analysis identifies spin-orbit coupling, surface-induced parity mixing, and structural chirality as the essential ingredients for both phenomena. Our results clarify the microscopic connection between structural chirality, electronic chirality, and chiral transport responses in artificial surface nanostructures.
Comments7 pages, 4 figures
