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Investigation of the Electron Energy Spectrum in a Three Dimensional Regimented Tetragonal Quantum Dot Superlattice

Published online by Cambridge University Press:  21 March 2011

Olga L. Lazarenkova  and
Alexander A. Balandin
Olga L. Lazarenkova
Affiliation:
Department of Electrical Engineering University of California at Riverside Riverside, CA 92521, U.S.A.
Alexander A. Balandin
Affiliation:
Department of Electrical Engineering University of California at Riverside Riverside, CA 92521, U.S.A.
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Abstract

We analyze the electron energy spectrum in three-dimensional regimented arrays of semiconductor quantum dots. The coupling among quantum dots results in formation of three- dimensional electron mini-bands. Changing the size of quantum dots, inter-dot distance, barrier height and regimentation, one can control the electronic band structure of this quantum dot superlattice, which can also be referred to as quantum dot crystal due to its structure and energy spectrum that resemble those of a real crystal. Results of computer simulations carried out for a tetragonal InAs/GaAs quantum dot superlattice show that the electron density of states, effective mass tensor and other properties are different from those of bulk and conventional quantum well superlattices.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 677: Symposium AA – Advances in Materials Theory and Modeling–Bridging Over Multiple-Length and Time Scales , 2001 , AA4.4
Copyright
Copyright © Materials Research Society 2001

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References

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