Abstract
The formation of spatially indirect excitons in superlattices with narrow minibands is theoretically and experimentally investigated. We identify the experimental conditions for the observation of interwell excitons and find a distinct excitonic state energetically located between the 1s exciton and the onset of the miniband absorption. The interwell exciton is similar to the first Wannier-Stark localized exciton of an electrically biased superlattice. However, in the present case the localization is mediated by the Coulomb interaction of the electron and the hole without external fields. © 1996 The American Physical Society.
- Received 23 April 1996
DOI:https://doi.org/10.1103/PhysRevB.54.10316
©1996 American Physical Society
