Fine structure of the trion triplet state in a single self-assembled semiconductor quantum dot

被引：63

作者：

Akimov, IA ^{[1
]}

Hundt, A ^{[1
]}

Flissikowski, T ^{[1
]}

Henneberger, F ^{[1
]}

机构：

[1] Humboldt Univ, Inst Phys, D-10115 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 25期

关键词：

D O I：

10.1063/1.1527694

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The emission from the charged biexciton is used to monitor the energy structure of the trion triplet state in a negatively charged CdSe/ZnSe quantum dot. The isotropic part of the electron-hole exchange interaction regroups the otherwise sixfold degenerated state in three Kramers doublets. The energy separation between the radiative pairs with total spin projection F-z = +/-3/2 and +/-1/2 is 1.6 meV. The anisotropic part mixes states with DeltaF(z) = +/-2 resulting in a partly linearly polarized transition dipole. Application of magnetic field lifts the degeneracy of the Kramers doublets. The g factors also manifest the anisotropic state mixing. (C) 2002 American Institute of Physics.

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页码：4730 / 4732

页数：3

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