Theory of photoluminescence from modulation-doped self-assembled quantum dots in a magnetic field

被引：118

作者：

Wojs, A ^{[1
]}

Hawrylak, P ^{[1
]}

机构：

[1] WROCLAW TECH UNIV,INST PHYS,PL-50370 WROCLAW,POLAND

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.55.13066

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the effect of free carriers on photoluminescence from modulation-doped self-assembled quantum dots. Exact diagonalization studies of up to N=8 electrons and a single exciton in InAs self-assembled dots, and a Hartree-Fock calculations for up to N=20 electrons, are carried out. The total spin and total angular momentum are found to oscillate with the number of electrons. The photoluminescence spectrum is calculated and the band-gap renormalization in zero-dimensional systems is discussed. The tendency of electrons in degenerate, partially filled electronic shells to maximize the total spin lends to a strong dependence of the spectrum on the number of electrons N, the magnetic field B, and the polarization of light.

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页码：13066 / 13071

页数：6

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