Metal induced step arrangement on Si(1 1 1) surface observed by LEED

Abstract Adsorbed structures of Ba on Si(1 1 1) surfaces have been observed by LEED. In elevating the annealing temperature after a few monolayers (MLs) deposition at room temperature (√3×2√3)R30°, 2×8 and 3×1 patterns were observed as reported by Weitering [H.H. Weitering, Surf. Sci. 355 (1996) L271]. Additionally a one-dimensional 10×1 pattern was observed in the temperature range between the appearance of two-dimensional 2×8 and 3×1 patterns. This pattern is considered to be produced by a combination of the periodical terrace with a width of 10 unit lengths separating each step and a 5×1 reconstruction on the terrace.