AI 中文总结
通过相干势近似的团簇扩展，研究发现无序诱导的非局域自能可重整化kagomé晶格跳跃项，在两绝缘态间形成含导电边缘模式的无能隙相，且多散射效应能产生有效自旋轨道相互作用并改变边缘谱。
AI 中文摘要
在相干势近似的团簇扩展框架内，无序平均会产生非局域自能，该自能会重整化无相互作用kagomé晶格哈密顿量的对角和非对角跳跃项。这些对最近邻与次近邻跳跃振幅的重整化作用，使系统在两种拓扑平庸绝缘态之间转变，中间存在一个由宽杂质浓度范围内的导电边缘模式表征的无能隙相。研究表明，仅多散射效应就能产生涌现的有效自旋轨道相互作用，并定性改变无序kagomé系统的边缘谱。
英文摘要
Within a cluster extension of the coherent potential approximation, disorder averaging generates a non-local self-energy that renormalizes both diagonal and off-diagonal hopping terms of the non-interacting Kagome-lattice Hamiltonian. These renormalizations (of both nearest- and next-nearest-neighbor hopping amplitudes) drive the system between two topologically trivial insulating states through an intermediate gapless phase characterized by conducting edge modes over a broad range of impurity concentrations. Our results demonstrate that multiple-scattering effects alone can generate emergent effective spin-orbit interactions and qualitatively modify the edge spectrum of disordered Kagome systems.
Comments12 pages, 7 figures
