Y. Vasilyev et al., Evidence for electron-hole hybridization in cyclotron-resonance spectra ofInAs/GaSb heterostructures, PHYS REV B, 60(15), 1999, pp. 10636-10639
Cyclotron-resonance (CR) experiments have been performed on InAs/GaSb/AlSb
double structures, in which electron and hole layers are separated by AlSb
barriers. The strength of the electron-hole coupling is altered by varying
the barrier width. Our data reveal that properties of InAs/GaSb systems wit
h AlSb barriers thinner than 1.5 nm are entirely determined by interlayer t
unneling and the CR features in such samples can be explained by hybridizat
ion between states in the InAs conduction band and in the GaSb valence band
. [S0163-1829(99)14235-8].