Abstract
Doped lateral superlattices realized on misoriented semiconductors substrates provide a tunable type I potential at the scale of both Fermi wavelength and Fermi energy of the electron system. The tuning of amplitude and symmetry changes efficiently the electron-hole overlap and the hole dimensionality. These two parameters control many-body processes involved in the photon emission at the Fermi level. The resulting spectral singularity is evidenced in photoluminescence experiments at low temperature.
- Received 5 September 1995
DOI:https://doi.org/10.1103/PhysRevLett.76.4219
©1996 American Physical Society
