Exchange interactions in quantum well subbands
- 14 November 1988
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (20), 1931-1933
- https://doi.org/10.1063/1.100327
Abstract
It is shown that exchange interactions in the two-dimensional electron gas in quantum wells could cause observable effects on subband energies and intersubband transition energies. In the case of doped quantum wells, the intrasubband exchange interaction can produce an energy shift which is substantially larger than the direct Coulomb energy shift. Theoretical estimates of such shifts are compared with experimental measurements of the infrared photoconductivity of multiple quantum well AlGaAs/GaAs structures with wells doped at about 1018 cm−3.Keywords
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