Excitonic enhancement of the Fermi-edge singularity in a dense two-dimensional electron gasW. ChenM. Fritzeet al.1992Physical Review B
Fermi-edge singularities as probes of a two-dimensional electron gas in GaAs heterostructuresM. FritzeW. Chenet al.1992Surface Science
Fermi-edge singularities and enhanced magnetoexcitons in the optical spectra of GaAs/(Ga,Al)As single quantum wellsW. ChenM. Fritzeet al.1991Physical Review B