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Near-Field Magneto-Photoluminescence of Singe Self-Organized Quantum Dots.

Published online by Cambridge University Press:  01 February 2011

A. M. Mintairov
Affiliation:
Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
A. S. Vlasov
Affiliation:
Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
J. L. Merz
Affiliation:
Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
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Abstract

We present results obtained using low temperature near-field scanning optical microscopy for the measurements of Zeeman splitting and the diamagnetic shift of single self-organized InAs/AlAs, InAs/GaAs and InP/GaInP quantum dots. The measurements allow us to relate the bimodal size distribution of InAs dots with variations in In content. For single InP QDs we observed a strong circular polarization at zero magnetic field accompanied with a negative energy shift, suggesting that strong internal magnetic fields exist in these QDs.

Type
Research Article
Copyright
Copyright © Materials Research Society 2004

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References

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