论文标题
两$ {^\ prime} $ - mos $ _2 $带有倾斜的狄拉克乐队
Polarizability, plasmons, and screening in 1T${^\prime}$-MoS$_2$ with tilted Dirac bands
论文作者
论文摘要
在存在外部垂直电场和应变的情况下，很明显，1t $ {^\ prime} $ - MOS $ _2 $展示了倾斜的零零带，它们已偏振山谷。此外，该材料在拓扑绝缘子和带绝缘子之间经历了拓扑相变为电场的临界值。使用线性响应理论，我们计算了极化函数，而极化函数又采用了获得介电函数。随后在计算中使用了后一个数量来确定与各种掺杂水平的掺杂相对应的等离子体分散关系，其衰减速率和杂质筛选，临界垂直电场强度以及1T $ {^\ prime} $ - MOS $ _2 $搭配Tilac Dirac Bands的1T $ {^\ PRIME} $ {^\ prime} $ _2 $的自旋轨道耦合差距。
In the presence of an external vertical electric field and strain, it is evident that 1T${^\prime}$-MoS$_2$ exhibits tilted Dirac bands which are valley-spin-polarized. Additionally, this material experiences a topological phase change between a topological insulator and band insulator for a critical value of the electric field. Using linear response theory, we calculated the polarization function which is in turn employed to obtain the dielectric function. This latter quantity is subsequently utilized in calculations to determine the plasmons dispersion relation, their decay rate and impurity screening corresponding to various levels of doping, the critical applied vertical electric field strengths and the spin-orbit coupling gap in 1T${^\prime}$-MoS$_2$ with tilted Dirac bands.
