论文标题
单层半导体中的电荷载波复合物
Charge-carrier complexes in monolayer semiconductors
论文作者
论文摘要
单层（1L）半导体的光致发光（PL）光谱具有归因于不同电荷载波复合物的峰。我们对这些配合物的结合能进行扩散量子蒙特卡洛模拟，并检查它们对电场和磁场的响应。我们专注于Quintons（带电的Biexcitons），因为它们是过渡金属二色元（TMDS）中最大的自由电荷载体配合物。我们通过比较使用$ \ textIt {ab intib} $相互作用电位的结果来研究电荷之间的rytova-keldysh相互作用势的准确性。与实验一致的磁场$ <8 $ t将绑定能（BES）更改为$ \ sim0.2 $ mev，t $^{ - 1} $，而不同复合物的变化非常相似。我们的结果将有助于确定1L-肺导体的PL光谱中的电荷复合物
The photoluminescence (PL) spectra of monolayer (1L) semiconductors feature peaks ascribed to different charge-carrier complexes. We perform diffusion quantum Monte Carlo simulations of the binding energies of these complexes and examine their response to electric and magnetic fields. We focus on quintons (charged biexcitons), since they are the largest free charge-carrier complexes in transition-metal dichalcogenides (TMDs). We examine the accuracy of the Rytova-Keldysh interaction potential between charges by comparing the binding energies of charge-carrier complexes in 1L-TMDs with results obtained using $\textit{ab initio}$ interaction potentials. Magnetic fields$<8$T change the binding energies (BEs) by$\sim0.2$ meV,T$^{-1}$, in agreement with experiments, with the BE variations of different complexes being very similar. Our results will help identify charge complexes in the PL spectra of 1L-semiconductors
