TY - JOUR
T1 - How "hot precursors" modify island nucleation
T2 - A rate-equation model
AU - Morales-Cifuentes, Josue R.
AU - Einstein, T. L.
AU - Pimpinelli, A.
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/12/10
Y1 - 2014/12/10
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.113.246101
DO - 10.1103/PhysRevLett.113.246101
M3 - Article
AN - SCOPUS:84918516719
SN - 0031-9007
VL - 113
JO - Physical Review Letters
JF - Physical Review Letters
IS - 24
M1 - 246101
ER -