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We investigate the transition from two- to three-dimensional growth of thin InAs films on InP by chemical beam epitaxy. This transition is shown to strongly depend on growth temperature and on the misorientation-or the presence of surface steps - on the InP surface where the InAs him is deposited. Low temperature photoluminescence measurements on InP-InAs-lnP quantum well structures and atomic force...
We study the thermal roughening of uncorrelated step edges on vicinal face centred cubic (111) surfaces by means of kinetic Monte Carlo (MC) simulations and kinematic calculations of the diffraction profiles. Both the initial and the final local atomic environments are used in the MC model to determine the hopping probability for atoms diffusing on the surface. We found that the step-edge fluctuations...
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