论文标题
PDSE $ _2 $五角大楼单层中的拓扑乐队
Topological bands in the PdSe$_2$ pentagonal monolayer
论文作者
论文摘要
从拓扑带理论的角度分析了单层五边形钯（PDSE2）的电子结构。采用第一原理计算，有效的模型和对称指标，我们发现低洼的传导带在拓扑上是非平凡的，受时间逆转和晶体对称性的保护。提出了支持频带非平凡特征的数值证据。此外，我们从拓扑观点（例如旋转霍尔电导率）获得了相关的物理反应。
The electronic structure of monolayer pentagonal palladium diselenide (PdSe2) is analyzed from the topological band theory perspective. Employing first-principles calculations, effective models and symmetry indicators, we find that the low-lying conduction bands are topologically nontrivial, protected by time reversal and crystalline symmetries. Numerical evidence supporting the nontrivial character of the bands is presented. Furthermore, we obtain a relevant physical response from the topological viewpoint, such as the spin Hall conductivity.
