title: Controlled growth of Zn nano-dots on a Si(111)-7x7 surface saturated with C2H5OH.
abstract: Metal atoms bonded with Si adatoms on the Si(111)-(7x7) surface undergo migration by hopping adjacent Si-rest atoms with dangling bond. By saturated adsorption of Si(111)-(7x7) surface with C(2)H(5)OH, the whole Si-rest atoms and a half of Si adatoms are occupied with Si-H and Si-OC(2)H(5), so that the Zn atoms adsorbed on this surface cannot migrate by hopping. When Zn atoms were deposited on this surface, ca. 5 nm Zn dots were grown in the hexagonal spacing of ca. 5.4 nm width around the corner holes, which work as a mold. This is quite different from the growth of honeycomb layers composed of Zn(3) clusters on the clean Si(111)-(7x7) surface. The dots grow up to nine (1.97 nm) to 13 layers (2.64 nm) by keeping their size, which implies a layer-by-layer growth of dots in the mold, where the growth is controlled by the kinetics instead of energetic feasibility.
authors.affiliation: Advanced Science Research Laboratory, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 369 0293, Japan.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Jiang
authors.forename: Zhaoxiong
authors.initials: Z
authors.lastname: Xie
authors.forename: Masayuki
authors.initials: M
authors.lastname: Shimojo
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Tanaka