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Article Dans Une Revue Physica E: Low-dimensional Systems and Nanostructures Année : 2006

Strong Fermi-edge singularity in ultrahigh quality AlGaAs/ GaAs quantum wires

X.-L. Wang
  • Fonction : Auteur
M. Ogura
  • Fonction : Auteur
R. Grousson
  • Fonction : Auteur
  • PersonId : 830485

Résumé

We report the observation of a strong Fermi-edge singularity (FES), with the complete suppression of the band-edge peak, in the photoluminescence spectra of ultra-high-quality modulation-doped AlGaAs/GaAs quantum wires (QWRs). We find that the FES effect is very sensitive to the Fermi energy. The strong FES is observed only in QWRs having a Fermi energy of the order of a few meV, and disappears almost completely when the Fermi energy exceeds 10 meV. These results are expected to spark new research activities, both experimentally and theoretically, on many-body effects in one-dimensional electron gas.

Domaines

Chimie

Dates et versions

hal-00016810 , version 1 (11-01-2006)

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Citer

X.-L. Wang, M. Ogura, Valia Voliotis, R. Grousson. Strong Fermi-edge singularity in ultrahigh quality AlGaAs/ GaAs quantum wires. Physica E: Low-dimensional Systems and Nanostructures, 2006, 32 (1–2), pp.329-332. ⟨10.1016/j.physe.2005.12.125⟩. ⟨hal-00016810⟩
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