N. Ohtani et al., INFLUENCE OF GAMMA-X MIXING ON CARRIER TRANSPORT AND PHOTOLUMINESCENCE IN GAAS ALAS TYPE-I SUPERLATTICES/, Superlattices and microstructures, 23(1), 1998, pp. 19-22
We report on the effects of field-induced Gamma-X resonances on carrie
r transport and optical properties of GaAs/AlAs type-I short-period su
perlattices (SLs). We have observed an anomalously delayed photocurren
t and Gamma 2-hhl photoluminescence originating from X1-Gamma 2 mixing
. These observations clearly suggest that electrical conductivity and
optical properties even in type-I SLs are seriously affected by X stat
es in the applied electric field. (C) 1998 Academic Press Limited.