Growth of patterned surfaces
In: Physical review letters, Jg. 79 (1997) ; Nr. 24, S. 4854-4857
ISSN: 1079-7114, 0031-9007
Zeitschriftenaufsatz / Fach: Physik
During epitaxial crystal growth a pattern that has initially been imprinted on a surface approximately reproduces itself after the deposition of an integer number of monolayers. Computer simulations of the one-dimensional case show that the quality of reproduction decays exponentially with a characteristic time which is linear in the activation energy of surface diffusion. We argue that this lifetime of a pattern is optimized if the characteristic feature size of the pattern is larger than (D/F)1/(d+2), where D is the surface diffusion constant, F the deposition rate, and d the surface dimension.