The dynamics of the c(2 x 8)-to-(1 x 1) phase transition of (111) were investigated by means of 100ps time-resolved reflection high-energy electron diffraction. A laser pulse was used to heat the surface, while a synchronized electron pulse was used to obtain the surface diffraction pattern. Slow heating showed that the adatoms in c(2 x 8) started to disorder at 510K, and were converted into a disordered adatom arrangement at 573K. During heating with 100ps laser pulses, the c(2 x 8) reconstructed adatom arrangement began to disorder at 584K. This was well above the onset temperature (510K) for the disordering of (2 x 8) during slow heating.

Time-Resolved Reflection High-Energy Electron Diffraction Study of the Ge(111)-c(2 x 8)-(1 x 1) Phase Transition X.Zeng, B.Lin, I.El-Kholy, H.E.Elsayed-Ali: Physical Review B, 1999, 59[23], 14907-10