Fine Structure of Neutral Excitons in Single GaAlAs Quantum Dots

M. Molas; K. Gołasa; B. Piętka; M. Potemski; A. Babiński

doi:10.12693/APhysPolA.122.988

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Acta Physica Polonica A

2012 | 122 | 6 | 988-990

Article title

Fine Structure of Neutral Excitons in Single GaAlAs Quantum Dots

Authors

M. Molas , K. Gołasa , B. Piętka , M. Potemski , A. Babiński

Content

http://przyrbwn.icm.edu.pl/APP/PDF/122/a122z6p03.pdf [remote]

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Abstracts

Optical anisotropy of neutral excitons in GaAlAs/AlAs quantum dots is investigated. Low-temperature polarization-sensitive photoluminescence measurements of single quantum dots are performed. It is found that neutral excitons (X) in the quantum dots exhibit a fine structure splitting. The fine structure splitting ranges from 10 μeV to 100 μeV and correlates with the X energy. The polarization axis of the fine structure splitting is well oriented along [110] crystallographic direction of a substrate. The orientation is attributed to the elongation of GaAlAs/AlAs quantum dots in the [110] direction of the substrate.

Keywords

78.55.Cr 78.67.Hc

Publisher

Institute of Physics, Polish Academy of Sciences

Journal

Acta Physica Polonica A

Year

2012

Volume

122

Issue

Pages

988-990

Physical description

Dates

published

2012-12

References

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Document Type

Publication order reference

YADDA identifier

bwmeta1.element.bwnjournal-article-appv122n603kz

Identifiers

DOI

10.12693/APhysPolA.122.988