Spontaneous symmetry breaking of excitons in multiple-quantum-wells

The results of self-consistent exciton energy calculations in finite multiple-quantum-wells with differing numbers of wells and varying barrier widths are described. The calculations show that even for a perfect system, the exciton localizes strongly in one well only. For a system with an even numbe...

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Bibliographic Details
Published in:Solid state communications 1996, Vol.99 (9), p.601-605
Main Authors: Piorek, T, Hagston, W.E, Harrison, P
Format: Article
Language:English
Subjects:
A. quantum wells
A. semiconductors
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems
Electron states and collective excitations in thin films, multilayers, quantum wells, mesoscopic and nanoscale systems
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
Physics
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Summary:The results of self-consistent exciton energy calculations in finite multiple-quantum-wells with differing numbers of wells and varying barrier widths are described. The calculations show that even for a perfect system, the exciton localizes strongly in one well only. For a system with an even number of wells this leads to a spontaneous symmetry breaking.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(96)00382-1