| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1547993 | Physica E: Low-dimensional Systems and Nanostructures | 2006 | 4 Pages |
Abstract
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 10Â meV. These results are expected to spark new research activities, both experimentally and theoretically, on many-body effects in one-dimensional electron gas.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
X.-L. Wang, M. Ogura, T. Guillet, V. Voliotis, R. Grousson,