Abstract
We have investigated the dependence on the magnetic field of the optical absorption and emission of a one-dimensional (1D) electron gas in GaAs quantum wires with one occupied subband. Spectra show a strong Fermi-edge singularity that narrows as the Fermi energy in the wires is continuously reduced by the enhancement of the effective mass in a perpendicular magnetic field. At high fields, when the cyclotron energy is larger than the 1D subband spacing, the lowest optical transition splits into a doublet due to the spatial modulation of the Landau levels by the wire potential.
Original language | English (US) |
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Pages (from-to) | 4285-4288 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 51 |
Issue number | 7 |
DOIs | |
State | Published - 1995 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics