Spectrally resolved overhauser shifts in single GaAs/AlxGa1-xAs quantum dots

被引：87

作者：

Brown, SW

Kennedy, TA

Gammon, D

Snow, ES

机构：

[1] The Naval Research Laboratory

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.54.R17339

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, the direct observation of spectrally resolved, polarization-dependent shifts in excitonic Zeeman splittings arising from dynamic polarization of lattice nuclei (the Overhauser effect) in single quantum dots is reported. Overhauser shifts corresponding to effective nuclear fields greater than 1.3 T were observed from quantum dots in a 4.2-nm-wide quantum well. These electron-nuclear interactions are an important aspect of the optical properties of quantum dots and may significantly affect recombination dynamics in quantum dots even in the absence of an external magnetic field.

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页码：17339 / 17342

页数：4

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