R. Tsu, W.E. Howard, et al.
Solid State Communications
We report the observation of an acoustic phonon mode, usually not Raman active, which is interpreted here as a disorder-activated longitudinal acoustic mode. Because of good matching of lattice constants and nearest-neighbor force constants in the alloy system GaxAl1-xAs, a simple theory has been successfully applied to obtain information on the electronic states. © 1972 The American Physical Society.
R. Tsu, W.E. Howard, et al.
Solid State Communications
L. Esaki, P.J. Stiles
Physical Review Letters
R. Tsu, H. Kawamura, et al.
Solid State Communications
H. Munekata, E. Mendez, et al.
Surface Science