论文标题
单层过渡金属二分法中的四元，pexcitons和hexcitons
Tetrons, pexcitons, and hexcitons in monolayer transition-metal dichalcogenides
论文作者
论文摘要
我们对掺杂的过渡金属二分法单层中的复合激素状态进行了全面的理论分析。利用配对分布函数，我们引入了一种方法，将筛选的效果包括在激子状态和费米-SEA电子之间的相互作用中。我们利用筛选的电位研究了四角子和pexciton，其中Trion分别与传导带中的一个和两个孔结合。传导带孔表示在TRION附近缺乏某些量子数的电子。然后，我们分析六个络合物，其中传导带孔有助于三个电子与一个价波段孔的结合。我们介绍了一个简单的模型，从中可以轻松地计算出己糖综合体中第三（卫星）电子的结合能。最后，我们将模拟结果与实验进行了比较，并指出了分析的缺点和成功。
We present a comprehensive theoretical analysis of composite excitonic states in doped transition-metal dichalcogenide monolayers. Making use of the pair distribution function, we introduce a method to include the effect of screening in the interaction between the excitonic state and Fermi-sea electrons. Employing the screened potential, we study tetrons and pexcitons in which a trion is bound to one and two holes in the conduction band, respectively. A conduction-band hole denotes the lack of electrons with certain quantum numbers at the vicinity of the trion. We then analyze the hexciton complex wherein conduction-band holes facilitate binding of three electrons with one valence-band hole. We introduce a simple model from which one can readily calculate the binding energy of the third (satellite) electron in the hexciton complex. Finally, we compare the simulated results with experiment and point out the shortcomings and successes of the analysis.
