@article{oai:nagoya.repo.nii.ac.jp:00005710, author = {Kato, R. and Uwaha, M. and Saito, Y.}, issue = {1-3}, journal = {Surface Science}, month = {Feb}, note = {We consider the wandering instability of steps due to a gap in the lifetime of adatoms for evaporation on the upper and the lower terraces. Our study is meant to explain the step wandering observed in the growth of Si(111) surface near its structural transition temperature. With a linear stability analysis and Monte Carlo simulations, we show that the instability of an isolated step occurs in growth if adatoms on the upper terrace evaporate more easily than those on the lower terrace. For the instability of a vicinal face, additional features are considered as the motion of the phase boundary and the mass flow across it during the phase transformation. It is found that steps and phase boundaries wander in-phase with a rather well-defined periodicity when evaporation is weak. We compare the result with that for a system with a gap in the diffusion coefficient. The simulation results show that the first mechanism is more effective to make the wandering steps in-phase and that the second mechanism induces step wandering in a wider range of parameters.}, pages = {149--165}, title = {Step Wandering Due to the Structural Difference of the Upper and the Lower Terraces}, volume = {550}, year = {2004} }