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Effect of Electric Fields in Coupled Double Quantum Wells

Published online by Cambridge University Press:  26 February 2011

Y. J. Chen
Affiliation:
GTE Laboratories Incorporated 40 Sylvan Road Waltham, MA 02254
Emil S. Koteles
Affiliation:
GTE Laboratories Incorporated 40 Sylvan Road Waltham, MA 02254
B. Elman
Affiliation:
GTE Laboratories Incorporated 40 Sylvan Road Waltham, MA 02254
C. A. Armiento
Affiliation:
GTE Laboratories Incorporated 40 Sylvan Road Waltham, MA 02254
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Abstract

We present a detailed experimental study of the influence of electric fields on exciton states in a GaAs/AlGaAs coupled double quantum well structure and discuss the advantages of using this novel structure. The coupling of electronic states in the two quantum wells, due to the narrowness of the barrier between them, leads to an enhancement of the quantum-confined Stark effect (by as much as five times that of the single quantum well case). From the measured energies of the exciton transitions, splittings of the levels in a coupled double quantum well structure were derived without recourse to a theoretical model.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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Footnotes

*

present address: Department of Electrical Engineering University of Maryland Baltimore, MD

References

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