论文标题
Intervalley Electron-Hole Exchange交互和间接激子的杂质辅助重组WS $ _2 $和WSE $ _2 $单层
Intervalley electron-hole exchange interaction and impurity-assisted recombination of indirect excitons in WS$_2$ and WSe$_2$ monolayers
论文作者
论文摘要
基于钨的二分法元素单层中的激子状态源于自旋和山谷自由度之间的独特相互作用。激子物种之一是间接激子（动量或山谷黑暗），这是单层电荷中性的一系列共鸣的原因。我们研究了间接激子的短距离电子交换相互作用，以及其由杂质介导的重组机制。该分析提供了对发射频谱中零孔间接激子共振的能量和极化的透彻理解。
The variety of excitonic states in tungsten-based dichalcogenide monolayers stems from unique interplay between the spin and valley degrees of freedom. One of the exciton species is the indirect exciton (momentum or valley dark), which is responsible to a series of resonances when the monolayer is charge neutral. We investigate the short-range electron-hole exchange interaction of the indirect exciton, as well as its recombination mechanism mediated by impurities. The analysis provides thorough understanding of the energy and polarization of the zero-phonon indirect exciton resonance in the emission spectrum.
