Heterogeneous energetic topographies generated by a diffusional mechanism

RAMIREZ PASTOR A. J,; BULNES F.; NIETO F.

SURFACE SCIENCE

ELSEVIER SCIENCE BV

Año: 2001 vol. 476 p. 161 - 170

0039-6028

In the present work, we study the growth process generated by the evolution of a tracer on a lattice gas surface with square symmetry. This tracer modifies the adsorptive properties of each visited site according to very simple laws. Thus, its evolution on the lattice changes the surface energetic topography. Two different quantities (the mean energy of the surface and the energetic interface width) have been defined in order to characterize the process. The study of the time evolution of these quantities leads to the determination of the scaling behaviors represented by the scaling exponents. In particular, the calculated values of the scaling exponents suggest that the problem belongs to an unknown universality class.