M. Pacheco et al., EXCITONIC EFFECTS IN A SUPERLATTICE IN PARALLEL ELECTRIC AND MAGNETIC-FIELDS, Journal of physics. Condensed matter, 5, 1993, pp. 363-364
Working in the effective-mass approximation we study the problem of ex
citons in a superlattice in parallel electric and magnetic fields. Usi
ng the translation symmetry of the excitonic effective Hamiltonian and
the electric field induced localization, we find an expression for th
e envelope excitonic function in terms of packet-like functions constr
ucted Of non-interacting electron-hole pairs in a one-dimensional supe
rlattice under an electric field.