98 citations · 230 across the 9 of their papers we have counts for
12 papers
Breakdown of metastable step-flow growth on vicinal surfaces induced by nucleation
Daniele Vilone, Claudio Castellano, Paolo Politi
We consider the growth of a vicinal crystal surface in the presence of a step-edge barrier. For any value of the barrier strength, measured by the length l_es, nucleation of island…
Nucleation and step-edge barriers always destabilize step-flow growth of a vicinal surface
Daniele Vilone, Claudio Castellano, Paolo Politi
We consider the effect of nucleation on a one-dimensional stepped surface, finding that step-flow growth is metastable for any strength of the additional step-edge barrier. The sur…
Random Deposition Model with a Constant Capture Length
Paolo Politi, Yukio Saito
We introduce a sequential model for the deposition and aggregation of particles in the submonolayer regime. Once a particle has been randomly deposited on the substrate, it sticks…
Simultaneous existence of two spin-wave modes in ultrathin Fe/GaAs(001) films studied by Brillouin Light Scattering: experiment and theory
M. G. Pini, P. Politi, A. Rettori +4
A double-peaked structure was observed in the {\it in-situ} Brillouin Light Scattering (BLS) spectra of a 6 Å thick epitaxial Fe/GaAs(001) film for values of an external magneti…
When does coarsening occur in the dynamics of one-dimensional fronts ?
Paolo Politi, Chaouqi Misbah
Dynamics of a one-dimensional growing front with an unstable straight profile are analyzed. We argue that a coarsening process occurs if and only if the period λof the steady state…
Irreversible nucleation in molecular beam epitaxy: From theory to experiments
Paolo Politi, Claudio Castellano
Recently, the nucleation rate on top of a terrace during the irreversible growth of a crystal surface by MBE has been determined exactly. In this paper we go beyond the standard mo…