Green’s function calculations were made of the structure and dynamics of the amphoteric behavior of Si [SiGa(Al),SiAs] impurities, and of the acceptor nature of Be and C [BeGa(Al),CAs] impurities. Impurity vibrational modes were studied for the nearest-neighbor CAs-AlGa pairs (C2v symmetry) in AlxGa1-xAs (for x-values of less than 0.04), for the second-nearest neighbor pairs [CAs-Al(Ga)-CAs, SiAl-As-BeAl] of C2v/Cs symmetry in AlAs (GaAs), and for passivated H-CAs complexes in GaAs and AlAs.

D.N.Talwar: Physical Review B, 1995, 52[11], 8121-31