Adatom ascending at step edges and faceting on fcc metal (110) surfaces

作者:Zhu WG*; de Mongeot FB; Valbusa U; Wang EG; Zhang ZY
来源:Physical Review Letters, 2004, 92(10): 106102.
DOI:10.1103/PhysRevLett.92.106102

摘要

Using first-principles total-energy calculations, we show that an adatom can easily climb up at monatomic-layer-high steps on several representative fcc metal (110) surfaces via a place exchange mechanism. Inclusion of such novel adatom ascending processes in kinetic Monte Carlo simulations of Al(110) homoepitaxy as a prototypical model system can lead to the existence of an intriguing faceting instability, whose dynamical evolution and kinetic nature are explored in comparison with experimental observations.

  • 出版日期2004-3-12
  • 单位中国科学院