Utas، نويسنده , , O.A. and Denisov، نويسنده , , N.V. and Kotlyar، نويسنده , , V.G. and Zotov، نويسنده , , A.V. and Saranin، نويسنده , , A.A. and Chou، نويسنده , , J.P. and Lai، نويسنده , , M.Y. and Wei، نويسنده , , C.M. and Wang، نويسنده , , Y.L.، نويسنده ,
Using statistical analysis of the scanning tunneling microscopy images of the 3 × 4-In surface magic cluster (SMC) arrays on Si(100)1 × 2 substrate at low In coverages, the main regularities of the space distribution of the nucleated SMCs have been established. It has been found that a nucleated SMC perturbs the surface potential relief within a limited zone around itself in a way that some of the sites in the zone demonstrate a great preference for nucleating a new cluster, while in the other sites the nucleation is greatly suppressed. Outside the zone, the nucleation probability is close to that of the random nucleation simulated using Monte-Carlo technique. Energetic background of the observed phenomena has been proved using density-functional theory calculations, which clearly demonstrate that the lower the formation energy the higher the occurrence probability of a given cluster-pair configuration.
Silicon , surface structure , morphology , Atom–solid interactions , roughness and topography , Indium , Scanning tunneling microscopy (STM)