Resonant coupling between Stark-ladder states in GaAs/AlGaAs superlattice
✍ Scribed by M. Yamaguchi; M. Morifuji; H. Kubo; K. Taniguchi; C. Hamaguchi; C. Gmachl; E. Gornik
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 155 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0749-6036
No coin nor oath required. For personal study only.
✦ Synopsis
We carried out electroreflectance measurements in a CaAs/AJGaAs superlatice at is (\mathrm{K}) in order to investigate the resonant couplings between the Stark-ladder states. The experimental data are analyzed by using tight-binding theory, including the electric field effect. From the comparison between the theoretical calculations and experimental results, the resonant couplings are found to occur between Stark-ladder states of the heavy-hole minibands. The observed transition energies of the resonant couplings do not cross each other, and the tight-binding calculations also indicate that the splittings of the energy levels are induced by the resonant couplings.