Consequences of Low Symmetry in Quantum Wires: Exciton Degeneracies and Quasi-Equilibrium High-Density Regime
✍ Scribed by M.-A. Dupertuis
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 105 KB
- Volume
- 221
- Category
- Article
- ISSN
- 0370-1972
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✦ Synopsis
We analyze the role of the confinement potential symmetry on the optical properties of quantum wires in the high-density regime. Within the Hartree-Fock approximation we go beyond a global group-theoretical analysis and analyse the structural details of the symmetrized set of microscopic polarization equations including band-mixing. We show that neglecting conduction band mixing leads to further degeneracies of the quantum wire excitonic fine structure. We also find that the decoupling of the symmetrized polarization equations is persistent in the quasi-equilibrium highdensity regime.
1 ) For group theory notations we follow [2] based on Altmann and Herzig [3]. An older, but much used, table is Koster et al. [4]. The match between the two notations is made as follows.