论文标题
从拓扑阶段到安德森在二维准膜系统中的本地化
From topological phase to Anderson localization in a two-dimensional quasiperiodic system
论文作者
论文摘要
在本文中，研究了准依术对二维系统的影响。我们发现存在拓扑相过渡，并伴随着横向安德森本地化。拓扑特性的特征在于带隙，边缘状态光谱，运输电导和Chern数。通过研究部分反向参与比，水平间距比和分数维度的研究清楚地证明了定位转变。结果揭示了批量离域状态的拓扑性质。我们的工作促进了对二维无序系统中拓扑与安德森本地化之间关系的理解。
In this paper, the influence of the quasidisorder on a two-dimensional system is studied. We find that there exists a topological phase transition accompanied by a transverse Anderson localization. The topological properties are characterized by the band gap, the edge-state spectra, the transport conductance, and the Chern number. The localization transition is clearly demonstrated by the investigations of the partial inverse participation ratio, the average of level spacing ratio, and the fraction dimension. The results reveal the topological nature of the bulk delocalized states. Our work facilitates the understanding on the relationship between the topology and the Anderson localization in two-dimensional disordered systems.
