Luminescence from miniband states in heavily doped superlattices
AUTOR(ES)
Oliveira, R.F., Henriques, A.B., Lamas, T.E., Quivy, A.A., Pires, M.P., Souza, P.L., Yavich, B., Abramof, E.
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2004-06
RESUMO
We have studied doped superlattices of GaAs/AlGaAs composition. When the doping atoms are introduced into the barriers surrounding the superlattice, as well as to the inner ones, but with half of the concentration, the photoluminescence due to interband transitions from extended superlattice states is detected. This is demonstrated by a study of the sample´s photoluminescence in a magnetic field, whose intensity oscillates in concomitance with the SdH spectrum of electrons confined in the miniband.
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