We use ab initio molecular dynamics to study Ge(111)c(2 × 8) at ∼ 300°C. At this temperature the defect-free surface disorders by a correlated diffusion of the adatoms along the  direction. The anisotropy of the diffusion arises from the special bonding topology of the c(2 × 8) structure. As in stable Ge(111)c(2 × 8) charge transfer plays an important role in the diffusion process.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry