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arXiv 2009.13621cond-mat.mes-hallphysics.optics
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Cu $_2$ O量子阱中的里德堡磁激子

Rydberg Magnetoexcitons in Cu$_2$O Quantum Wells

David Ziemkiewicz, Gerard Czajkowski, Karol Karpiński, Sylwia Zielińska-Raczyńska

摘要:

我们提出了一种理论方法,可以计算的光学功能的Cu $_2$ O量子阱(QW)与里德堡激子在一个外部磁场的任意场强。法拉第和Voigt配置被认为是,在高能区的p-激子。我们采用实密度矩阵方法和有效的电子-氢势,从而能够推导出量子阱磁光函数的解析表达式。对于这两种配置,所有三个领域的制度:弱,中间,和高场,被认为是分开处理。借助于所发展的近似方法,我们能够估计场区之间的界限。所得理论磁吸收谱与实验数据吻合较好。

英文摘要:

We present theoretical approach that allows for calculation of optical functions for Cu$_2$O Quantum Well (QW) with Rydberg excitons in an external magnetic field of an arbitrary field strength. Both Faraday and Voigt configurations are considered, in the energetic region of p-excitons. We use the real density matrix approach and an effective e-h potential, which enable to derive analytical expressions for the QW magneto-optical functions. For both configurations, all three field regimes: weak, intermediate, and high field, are considered and treated separately. With the help of the developed approximeted method we are able to estimate the limits between the field regimes. The obtained theoretical magneto-absorption spectra show a good agreement with available experimental data.

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