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Effect of Bi isovalent dopants on the formation of homogeneous coherently strained InAs quantum dots in GaAs matrices

机译:Bi等价掺杂剂对GaAs矩阵中均匀相干应变InAs量子点形成的影响

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摘要

The distribution of hydrostatic strains in Bi~(3+)-doped InAs quantum dots embedded in a GaAs matrix are calculated in the context of the deformation-potential model. The dependences of strains in the material of spherical InAs quantum dots with substitutional (Bi → As) and interstitial (Bi) impurities on the quantum-dot size are derived. The qualitative correlation of the model with the experiment is discussed. The data on the effect of doping on the morphology of self-assembled InAs:Bi quantum dots in a GaAs matrix are obtained.
机译:在变形势模型的基础上,计算了嵌入GaAs基体中的Bi〜(3+)掺杂InAs量子点中的静应变分布。推导了球形InAs量子点材料中应变(Bi→As)和间隙(Bi)杂质的应变对量子点尺寸的依赖性。讨论了模型与实验的定性相关性。获得关于掺杂对GaAs矩阵中自组装InAs:Bi量子点形态的影响的数据。

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