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Proceedings Paper

The role of exciton-exciton interaction on nonlinearities in GaN microdisks
Author(s): S. Shojaei; F. Troiani; A. Asgari; M. Kalafi; G. Goldoni
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Paper Abstract

Large built-in piezoelectric fields in nitride nanostructures, because of their wurtzite structure, induce a spatial seperation between confined electrons and holes and lead to formation of electric dipoles. This paper investigates the effects of exciton-exciton interaction as a dipolar interaction in a GaN/AlxGa1-xN microdisk. We show how this interaction result in biexciton binding energies in the meV energy range. Also we study the effect of disk radius on exciton binding energy. Results show that the exciton binding energy in smaller disks, is larger than the bigger one.

Paper Details

Date Published: 22 May 2009
PDF: 10 pages
Proc. SPIE 7354, Nonlinear Optics and Applications III, 73541I (22 May 2009); doi: 10.1117/12.820538
Show Author Affiliations
S. Shojaei, Research Institute for Applied Physics and Astronomy (Iran, Islamic Republic of)
INFM and Univ, degli Studi di Modena e Reggio Emilia (Italy)
F. Troiani, INFM and Univ, degli Studi di Modena e Reggio Emilia (Italy)
A. Asgari, Research Institute for Applied Physics and Astronomy (Iran, Islamic Republic of)
M. Kalafi, Research Institute for Applied Physics and Astronomy (Iran, Islamic Republic of)
G. Goldoni, INFM and Univ, degli Studi di Modena e Reggio Emilia (Italy)


Published in SPIE Proceedings Vol. 7354:
Nonlinear Optics and Applications III
Mario Bertolotti, Editor(s)

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