Strong Fermi-edge singularity in ultrahigh quality AlGaAs/ GaAs quantum wires
| Autor: | Thierry Guillet, Mutsuo Ogura, Roger Grousson, Valia Voliotis, X. L. Wang |
|---|---|
| Přispěvatelé: | Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Photoluminescence Condensed matter physics Many-body theory Fermi level Quantum wires PACS: 73.21.Hb 78.67.Lt 78.55.Cr 81.07.Vb Fermi energy Condensed Matter Physics Atomic and Molecular Physics and Optics Spectral line Electronic Optical and Magnetic Materials symbols.namesake Singularity symbols Physics::Accelerator Physics [CHIM]Chemical Sciences Atomic physics Fermi-edge singularity Fermi gas Fermi Gamma-ray Space Telescope |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures Physica E: Low-dimensional Systems and Nanostructures, 2006, 32 (1–2), pp.329-332. ⟨10.1016/j.physe.2005.12.125⟩ |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2005.12.125⟩ |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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