Electron gas in semiconductor multiple quantum wires: Spatially indirect optical transitions
- 9 October 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 63 (15), 1641-1644
- https://doi.org/10.1103/physrevlett.63.1641
Abstract
In optical experiments with laterally patterned GaAs quantum wells we observe confinement of free carriers to motion in one dimension. Optical recombination of band-gap transitions shows that free electrons and holes are confined in spatially indirect type-II multiple quantum wires. Resonant-inelastic-light-scattering spectra show intersubband excitations of the one-dimensional electron gas. From the optical measurements we obtain the Fermi energy as well as subband spacing and determine the linear free-electron density.Keywords
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