Optical spectroscopy of quantum dots in high magnetic fields

被引：3
作者：
Babinski, A. [1 ]
机构：
[1] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland
来源：
ACTA PHYSICA POLONICA A | 2006年 / 110卷 / 03期
关键词：
D O I：
10.12693/APhysPolA.110.275
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Optical spectroscopy measurements of single InAs/GaAs self-assembled quantum dots have been performed. The multiexcitonic emission from the s-, p-, and d-shells of a single dot is observed and investigated in magnetic field up to 28 T. The Zeeman splitting of the s-shell excitons has been found to depend on the dot morphology. While the energy-splitting in flat (2 nm height) dots linearly increases with magnetic field, its significant non-linearity is observed for larger in size, tall (4 nm height) dots. The effect of magnetic field on the orbital motion of carriers in dots has also been investigated. It has been found that the modified Fock-Darwin pattern explains the observed evolution of the emission from highly-excited single tall quantum dot.
引用
收藏
页码：275 / 286
页数：12
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