Abstract The spin-flip relaxation time for electrons in self-assembled coupled quantum dots (SACQDs) due to emission of acoustic phonons is presented. We focus on arbitrary shaped quantum dots made with InAs embedded in a wetting layer InAs and surrounded by GaAs. The electron states are calculated using the 8-band strain dependent theory. The deformation potential and the piezo- electric acoustic phonon modes are employed to estimate the electron-phonon coupling. Spin-flip time is calculated by Fermi’s Golden Rule and its dependence on the shape of the QDs, the size and the lattice temperature is investigated.

中文翻译：

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通过声子发射自组装量子点的自旋翻转弛豫机制

摘要 介绍了自组装耦合量子点 (SACQD) 中由于声子发射引起的电子自旋翻转弛豫时间。我们专注于由嵌入润湿层 InAs 并被 GaAs 包围的 InAs 制成的任意形状的量子点。使用 8 能带应变相关理论计算电子态。变形势和压电声子模式被用来估计电子-声子耦合。自旋翻转时间由费米黄金法则计算，并研究了它对量子点形状、尺寸和晶格温度的依赖性。