Abstract
In situ high-temperature () scanning tunneling microscopy was used to determine the coarsening and decay kinetics of two-dimensional TiN adatom and vacancy islands on atomically smooth TiN(111) terraces. We report the first observation of an abrupt decrease in decay rates, irrespective of , of adatom islands with areas less than a critical value of . However, no decay rate transition was observed for vacancy islands. We attribute the size-dependent island decay behavior, which is consistent with detachment-limited kinetics, to anisotropic attachment and detachment barriers.
- Received 23 June 2002
DOI:https://doi.org/10.1103/PhysRevLett.89.176102
©2002 American Physical Society