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Coulomb‐Correlation Effects on the Non‐Linear Optical Properties of Realistic Quantum Wires
Author(s) -
Rossi F.,
Molinari E.
Publication year - 1997
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(199711)204:1<241::aid-pssb241>3.0.co;2-e
Subject(s) - coulomb , linear correlation , physics , quantum , correlation , quantum mechanics , condensed matter physics , materials science , mathematics , geometry , electron , statistics
We review recent results on the linear and non‐linear optical response of realistic quantum‐wire structures. Our theoretical approach is based on a set of generalized semiconductor Bloch equations, and allows a full three‐dimensional multisubband description of Coulomb correlation for any shape of the confinement profile, thus permitting a direct comparison with experiments for available state‐of‐the‐art wire structures. Our results show that electron–hole Coulomb correlation removes the one‐dimensional band‐edge singularities from the absorption spectra, whose shape results to be heavily modified with respect to the ideal free‐particle case over the whole range of photoexcited carrier densities.