The effect of a longitudinal magnetic field on electronic intersubband transitions in asymmetric heterostructures |
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Authors: | F T Vas’ko G Ya Kis |
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Affiliation: | (1) Institute of Semiconductor Physics, Ukraine National Academy of Sciences, 252650 Kiev, Ukraine |
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Abstract: | Infrared absorption spectra are calculated for electronic intersubband transitions in asymmetric heterostructures subjected
to a longitudinal magnetic field. The systems discussed include a single quantum well in a transverse electric field, a “stepped”
quantum well, and a double well with tunnel-coupled excited levels. The longitudinal magnetic field causes collisionless broadening
of the absorption peaks (because the effect of the magnetic field on the dispersion law of an electronic state varies from
state to state, which modifies the transitions between them) and absorption of normally incident light (due to changes in
the selection rules).
Fiz. Tekh. Poluprovodn. 31, 1121–1125 (September 1997) |
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