Interaction of charged impurities and Rydberg excitons in cuprous oxide
Interaction of charged impurities and Rydberg excitons in cuprous oxide
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DOI：
10.1103/physrevb.101.235204
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发表时间：
2020-06-16
影响因子：
3.7
通讯作者：
Scheel, Stefan
中科院分区：
文献类型：
--
作者：
Krueger, Sjard Ole;Stolz, Heinrich;Scheel, Stefan
我们研究了带电杂质的静态、不相关分布对氧化铜 Cu2O 中束缚激子光谱的影响。我们表明，斯塔克位移和电离率的统计分布导致里德堡共振消失为明显的连续谱。由于旋转对称性破缺而出现额外的吸收线，加上空间上不均匀的斯塔克位移，导致观察到的线形状发生变化，与实验中观察到的变化在质量上一致。
We investigate the influence of a static, uncorrelated distribution of charged impurities on the spectrum of bound excitons in the copper oxide Cu2O. We show that the statistical distribution of Stark shifts and ionization rates leads to the vanishing of Rydberg resonances into an apparent continuum. The appearance of additional absorption lines due to the broken rotational symmetry, together with spatially inhomogeneous Stark shifts, leads to a modification of the observed line shapes that agrees qualitatively with the changes observed in the experiment.