论文标题
GAAS/Algaas量子点中中性和带电激子的磁光特性理论
Theory of magneto-optical properties of neutral and charged excitons in GaAs/AlGaAs quantum dots
论文作者
论文摘要
提供了弱限制的GAA/藻类量子点的磁光学特性的详细理论研究。我们专注于中性和带电的激子状态的DiMagnetic系数和$ g $ - $ factor，以及它们的演变，它们的演变为沿$ [001] $方向应用的磁场的各种点大小。对于计算，我们使用$ {\ bf k} \ cdot {\ bf p} $的组合和配置交互方法。我们将理论分解为四个精确度，即（i）单粒子电子和孔状态，（ii）非相互作用的电子孔对，（iii）电子孔对，是从Quasiparticles的基态和通过库仑相互作用相互作用（即具有最小的Correlation）和（IV效应）的cor correc的coulomb相互作用的相互作用（即，效应效果）的相互作用。上述方法使我们能够确定各种单粒子和多粒子对所研究的磁光学特性的主要影响，从而可以使用尽可能简单但保留详细的物理图片的模型来表征实验。
Detailed theoretical study of the magneto-optical properties of weakly confining GaAs/AlGaAs quantum dots is provided. We focus on the diamagnetic coefficient and the $g$-factor of the neutral and the charged excitonic states, respectively, and their evolution with various dot sizes for the magnetic fields applied along $[001]$ direction. For the calculations we utilize the combination of ${\bf k}\cdot{\bf p}$ and the configuration interaction methods. We decompose the theory into four levels of precision,~i.e., (i) single-particle electron and hole states, (ii) non-interacting electron-hole pair, (iii) electron-hole pair constructed from the ground state of both quasiparticles and interacting via the Coulomb interaction (i.e. with minimal amount of correlation), and (iv) that including the effect of correlation. The aforementioned approach allows us to pinpoint the dominant influence of various single- and multi-particle effects on the studied magneto-optical properties, allowing the characterization of experiments using models which are as simple as possible, yet retaining the detailed physical picture.
