Two-Speed Phase Dynamics in the Si(111) 7 7 - 1 1 Phase Transition
作者： Ye-Chuan Xu , Bang-Gui Liu
DOI: 10.1103/PHYSREVLETT.100.056103
关键词:
摘要: We propose a natural two-speed model for the phase dynamics of Si(111) 7x7 transition to high-temperature unreconstructed phase. formulate by using phase-field method and adaptive mesh refinement. Our simulated results show that island decays with its shape kept unchanged, area decay rate is shown be constant increasing initial area. Low-energy electron microscopy experiments concerned are explained, which confirms dimer chains corner holes broken first in transition, then stacking fault remedied slowly. This reliable approach surface transitions.
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