The stability of various surface reconstructions on (001) was investigated. Density-functional theory calculations predicted that 4 different surface reconstructions should be stable at various chemical potentials. The 2 dominant reconstructions were β(2 x 4) for high As over-pressures, and α2(2 x 4) for low As over-pressures. This trend was confirmed by the scanning tunnelling microscopy of annealed (001) surfaces. A similar behavior was predicted to occur for GaAs(001).

Surface Reconstructions for InAs(001) Studied with Density-Functional Theory and STM. C.Ratsch, W.Barvosa-Carter, F.Grosse, J.H.G.Owen, J.J.Zinck: Physical Review B, 2000, 62[12], R7719-22