论文标题
SSH模型中异质结构的边缘状态，运输和拓扑特性
Edge states, transport and topological properties of heterostructures in the SSH model
论文作者
论文摘要
在本文中，我们讨论了不同拓扑材料的二元异质结构的拓扑和运输特性。使用Su-Schrieffer-Heeger模型和Green功能的方法，我们计算和表征这些异质结构的边缘状态。我们通过从Zak阶段计算出的不变式来研究拓扑阶段，以构建相图。我们获得了一个分析结果，使我们能够找到一维通用链的拓扑相图以及跨带条件的异质结构。我们还使用非平衡绿色功能技术来计算差分电导，显示边缘状态的隧道并讨论其可能的设计和实验应用。
In this paper, we discuss the topological and transport properties of binary heterostructures of different topological materials. Using the Su-Schrieffer-Heeger model and the method of Green's functions, we calculate and characterize the edge states of these heterostructures. We study the topological phase through an invariant calculated from the Zak phase in order to build phase diagrams. We obtained an analytical result that allows us to find the topological phase diagram for a one-dimensional general chain and for heterostructures from the cross band condition. We also calculate the differential conductance with the non-equilibrium Green function technique showing the tunneling of the edge states and discussing its possible design and experimental application.
