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) deposi
tion at room temperature (root3 x 2 root3)R30 degrees, 2 x 8 and 3 x 1 patt
erns were observed as reported by Weitering [H.H. Weltering, Surf. Sci. 355
(1996) L271]. Additionally a one-dimensional 10 x 1 pattern was observed i
n the temperature range between the appearance of two-dimensional 2 x 8 and
3 x 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 x 1 reconstruction on the terrace. (C) 2001 Elsevier Science B
.V. All rights reserved.