Ordered growth allows to obtain controlled size and density structures, as shown by the Co/Au(788) system and others [1]. Although basic mechanisms for this ordered growth have been found out, the complexity of atomistic processes on surfaces (and especially on nanopatterned ones) makes the behaviour of such system generally very unexpected. We will show variable temperature experiments of the growth of Pt and Fe on different naturally patterned surfaces. Whereas the Au(111) herringbone reconstruction is found to be very sensitive to the Pt deposition, the Au(788) vicinal surface reconstruction is undisturbed, what allows to grow ordered nanostructures. On Au(788), an ordered growth is observed for both Fe and Pt, on a large temperature range. On Au(111) surface, despite the fact that the Fe deposition is organized at room temperature, we see no organization for the Pt one.
Finally, results on the ordered growth of codeposited iron and platinum atoms on Au(111) will be shown. Different experiments varying the relative concentration of iron and/or the substrate temperature will be discussed in the framework of the nucleation and growth kinetic theory.
[1] V. Repain et al., J. Phys. : Condens. Matter. 18 (2006) S17-S28
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