Abstract
We propose a novel island nucleation and growth model explicitly including transient (ballistic) mobility of the monomers deposited at rate , assumed to be in a hot precursor state before thermalizing. In limiting regimes, corresponding to fast (diffusive) and slow (ballistic) thermalization, the island density obeys scaling . In between is found a rich, complex behavior, with various distinctive scaling regimes, characterized by effective exponents and activation energies that we compute exactly. Application to of recent organic-molecule deposition experiments yields an excellent fit.
- Received 3 August 2014
DOI:https://doi.org/10.1103/PhysRevLett.113.246101
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