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Consequences of Low Symmetry in Quantum Wires: Exciton Degeneracies and Quasi‐Equilibrium High‐Density Regime
Author(s) -
Dupertuis M.A.
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200009)221:1<323::aid-pssb323>3.0.co;2-5
Subject(s) - physics , decoupling (probability) , conduction band , polarization (electrochemistry) , quantum , condensed matter physics , exciton , quantum mechanics , mixing (physics) , symmetry (geometry) , quantum electrodynamics , electron , chemistry , mathematics , control engineering , engineering , geometry
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 high‐density regime.