Thermodynamic and kinetic mechanisms in self-assembled quantum dot formation

Heteroepitaxial growth of highly strained structures offers the possibility to fabricate islands with very narrow size distribution, coined self-assembling quantum dots (SAQD). In spite of the high experimental interest, the mechanism of SAQD formation is not well understood. We will show that equilibrium theories can successfully predict the island sizes and densities, the nature and the magnitude of the critical thickness needed to be deposited for SAQD formation, as well as the onset of ripening. Furthermore, the flux and temperature dependence of the SAQDs is described using kinetic Monte Carlo simulations.


More publications
M. A. Makeev, A.-L. Barabási

Applied Physics Letters 73, 1445–1447 (1998)

I. Daruka, A.-L. Barabási

Physical Review Letters 79, 3708–3711 (1997)

D. J. Hornbaker, R. Albert, I. Albert, A.-L. Barabási, P. Schiffer

Nature 387, 765 (1997)