论文标题
光学泵送的非平衡稳态对原子薄的半导体激子的发光发射的影响
Impact of optically pumped non-equilibrium steady states on luminescence emission of atomically-thin semiconductor excitons
论文作者
论文摘要
已经广泛研究了过渡金属二分法的布里渊区中非等效角的相互作用。尽管实验和理论工作有助于详细了解选择性光学激发的放松和相关的放松率，但到目前为止，仅对固定实验的显微镜描述有限。在此手稿中，我们提出了连续波泵期间激子非平衡稳态特性的微观计算。我们发现光致发光激发光谱和极化程度的鲜明特征是由声子辅助激发型转变占主导地位，而激发型转变主导于激子重组和Intervalley交换耦合。
The interplay of the non-equivalent corners in the Brillouin zone of transition metal dichalcogenides have been investigated extensively. While experimental and theoretical works contributed to a detailed understanding of the relaxation of selective optical excitations and the related relaxation rates, only limited microscopic descriptions of stationary experiments are available so far. In this manuscript we present microscopic calculations for the non-equilibrium steady state properties of excitons during continuous wave pumping. We find sharp features in photoluminescence excitation spectra and degree of polarization which result from phonon assisted excitonic transitions dominating over exciton recombination and intervalley exchange coupling.
