论文标题

二维原子晶格中的光子拓扑安德森绝缘子

Photonic topological Anderson insulator in a two-dimensional atomic lattice

论文作者

Skipetrov, Sergey E., Wulles, Pierre

论文摘要

原子位置的疾病可以引起拓扑非平凡的拓扑 - 拓扑安德森绝缘子(TAI) - 用于二维蜂窝原子的二维蜂窝晶状体的横向电气准原子。太极需要时间反转和反转对称性才能分解为类似的范围。它的特征是非零拓扑不变,散装中的态密度降低,并在散装中的空间定位,以及传播边缘状态。从TAI到拓扑绝缘体(Ti)相的过渡可以以拓扑不变的恒定值进行,表明TAI和TI代表相同的拓扑阶段。

Disorder in atomic positions can induce a topologically nontrivial phase - topological Anderson insulator (TAI) - for transverse electric optical quasimodes of a two-dimensional honeycomb lattice of immobile atoms. TAI requires both time-reversal and inversion symmetries to be broken to similar extents. It is characterized by a nonzero topological invariant, a reduced density of states and spatially localized quasimodes in the bulk, as well as propagating edge states. A transition from TAI to the topological insulator (TI) phase can take place at a constant value of the topological invariant, showing that TAI and TI represent the same topological phase.

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