- We report the observation of strong Fermi-edge singularities photoluminescence spectrum the of strongly-confined, modulation-doped GaAs v-groove quantum wires. The behaviour of the singularity has been investigated at high excitation intensity, and both lattice and electrical heating. The latter produces a strong reduction of the singularity due to Fermi surface smearing, whereas, increased photoexcitation produces complex electron-hole correlation effects.
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Fermi-edge singularities in the photoluminescence and magneto-optical spectra of modulation-doped v-groove quantum wires
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