Gregory Czap, Kyungju Noh, et al.
APS Global Physics Summit 2025
Photocurrent and photoluminescence excitation spectra of GaAs/AlxGa1-xAs quantum wells in an electric field exhibit two exciton peaks in the energy range where only a single exciton is expected to occur. Uniaxial stress and polarization-dependent measurements indicate that the two peaks have strongly mixed heavy- and light-hole characters. The observation of an additional peak is attributed to mixing between the n=2 heavy-hole and n=1 light-hole valence subbands. Our measurements provide direct evidence for the large effect that valence-band mixing has on excitons in quantum wells. © 1987 The American Physical Society.
Gregory Czap, Kyungju Noh, et al.
APS Global Physics Summit 2025
T. Schneider, E. Stoll
Physical Review B
J. Paraszczak, J.M. Shaw, et al.
Micro and Nano Engineering
R.W. Gammon, E. Courtens, et al.
Physical Review B