Gq. Hai et al., ELECTRON OPTICAL-PHONON COUPLING IN GAAS ALXGA1-XAS QUANTUM-WELLS DUETO INTERFACE, SLAB, AND HALF-SPACE MODES/, Physical review. B, Condensed matter, 48(7), 1993, pp. 4666-4674
The electron optical-phonon coupling is studied in GaAs/AlxGa1-xAs qua
ntum wells as due to the interface modes, the confined slab modes in t
he well, and the half-space modes in the barriers. The polaron binding
energy and effective mass are calculated and the relative importance
of the different phonon modes is investigated as a function of the wid
th of the quantum well. The full-energy spectrum, i.e., the discrete e
nergy levels in the well and the continuum energy spectrum above the b
arrier, are included as intermediate states. The polaron binding energ
y and effective mass go continuously from the three-dimensional (3D) A
lxGa1-xAs to the 3D GaAs results when the well width varies from zero
to infinity.