✦ LIBER ✦
Breakdown of the one-electron picture in optical spectroscopy of low-dimensional electron systems: three anomalies around the Fermi level
✍ Scribed by T. Mélin; F. Laruelle
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 71 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0749-6036
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✦ Synopsis
We report three distinct anomalies in emission, absorption and linear emission polarization of two-dimensional degenerate electron systems with tunable lateral potential modulation. We show that they occur for convergent as well as singular Fermi edges with a unique threshold energy below the Fermi level. The resulting spectral hole for convergent edges significantly breaks down the determination of the Fermi energy in the one-electron picture from photoluminescence spectra.