How "hot precursors" modify island nucleation: A rate-equation model

Josue R. Morales-Cifuentes, T. L. Einstein, A. Pimpinelli

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

We propose a novel island nucleation and growth model explicitly including transient (ballistic) mobility of the monomers deposited at rate F, assumed to be in a hot precursor state before thermalizing. In limiting regimes, corresponding to fast (diffusive) and slow (ballistic) thermalization, the island density N obeys scaling N. Fα. In between is found a rich, complex behavior, with various distinctive scaling regimes, characterized by effective exponents αeff and activation energies that we compute exactly. Application to N(F,T) of recent organic-molecule deposition experiments yields an excellent fit.

Original languageEnglish (US)
Article number246101
JournalPhysical Review Letters
Volume113
Issue number24
DOIs
StatePublished - Dec 10 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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