Paolo Politi

TL;DR: In this paper, a review of the most frequent instabilities in ballistic growth is presented, which are mostly kinetic (when the desired state cannot be reached because of a lack of time) or thermodynamic (when a desired state is unstable).

TL;DR: In contrast with other authors who studied different models, coarsening is found to become extremely slow after the mounds have reached a radius, and the model depends on a single parameter which characterizes the strength of step-edge barriers.

TL;DR: Tersoff et al. as discussed by the authors developed a theory of nucleation on top of two-dimensional islands bordered by steps with an additional energy barrier for descending atoms, which is based on the concept of the residence time of an adatom on the island and yields an expression for the nucleation rate which becomes exact in the limit of strong step-edge barriers.

TL;DR: In this paper, the effective dipolar interaction between single domain two-dimensional ferromagnetic particles (islands or dots), taking into account their finite size, was determined, and the first correction term decays as ${1/D}^{5},$ where D is the distance between particles.

TL;DR: It is proved analytically that a sequence of applied fields with fixed amplitude is unable to drive the system to its ground state from a saturated state and should be relevant for other systems where disorder does not change the nature of the ground state.