Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2005-09-21
Physics
Condensed Matter
Other Condensed Matter
3 pages, 2 figures
Scientific paper
10.1063/1.2139621
In this work we investigate the electronic and optical properties of self-assembled InN/GaN quantum dots. The one-particle states of the low-dimensional heterostructures are provided by a tight-binding model that fully includes the wurtzite crystal structure on an atomistic level. Optical dipole and Coulomb matrix elements are calculated from these one-particle wave functions and serve as an input for full configuration interaction calculations. We present multi-exciton emission spectra and discuss in detail how Coulomb correlations and oscillator strengths are changed by the piezoelectric fields present in the structure. Vanishing exciton and biexciton ground state emission for small lens-shaped dots is predicted.
Baer Norman
Czycholl Gerd
Gartner Paul
Jahnke Frank
Schulz St.
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