论文标题
双层TD-WTE2中的步骤的电子特性
Electronic properties of the steps in bilayer Td-WTe2
论文作者
论文摘要
单层WTE2条纹是量子自旋大厅（QSH）绝缘子。密度函数理论用于研究条纹的电子特性和双层TD-WTE2中的步骤。对于沿W原子（x方向）二聚体链的条纹，两层之间的杂交抑制了QSH状态。但是，可以通过形成步骤来恢复QSH性质，具体取决于步骤的原子结构。相反，沿y方向的条纹和步骤保持QSH状态。这些发现可以扩大WTE2中QSH状态的应用范围。
Monolayer WTe2 stripes are quantum spin Hall (QSH) insulators. Density functional theory was used for investigating the electronic properties of the stripes and steps in bilayer Td-WTe2. For the stripes oriented along the dimer chains of W atoms (x direction), the hybridization between the two layers suppresses the QSH states. However, the QSH nature can be recovered by forming a step, depending on the atomic structure of the step. Conversely, the stripes and steps along the y direction maintain the QSH states. These findings can expand the application range of the QSH states in WTe2.
