Spectrum and tunneling in self-assembled quantum dots
Spectrum and tunneling in self-assembled quantum dots
复制标题
自组装量子点的光谱和隧道效应
DOI：
10.1103/physrevb.67.115318
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发表时间：
2003
影响因子：
3.7
通讯作者：
A. Vagov
中科院分区：
文献类型：
--
作者：
I. Larkin;A. Vagov
We present analytical results for the tunneling escape rate for nanoscale quantum dots (QD's). It is shown that tunneling from excited states with nonzero angular momentum is suppressed. The tunneling from the states with zero angular momentum is described by a universal expression where only the preexponential factor is dependent of a particular model for a QD. The result is used to calculate the photocurrent spectrum in QD arrays. The expression for the photocurrent is reduced to a simple formula with few model-dependent parameters. The results are in quantitative agreement with experimental data. Average electron ground-state energy of a QD at the flatband condition is extracted from the best fit.
