Quasi one-dimensional lead ribbons on the Si(110) surface

摘要

The crystallographic structure of quasi one-dimensional lead ribbons prepared on Si(110) surface is investigated with reflection high energy electron diffraction and scanning tunneling microscopy. Deposition of 2.6 monolayers of lead with subsequent annealing at 260 degrees C results in the formation of anisotropic metallic structures ordered over macroscopic area. The lead ribbons grow along [(1) over bar 10] which is a unique direction for this surface and form a single domain system contrary to pristine Si(110)-(16 x 2) or (7 x 2)-Pb reconstructions that extend along equivalent (11 (2) over bar) directions. Diffraction and STM experiments reveal the 16.3 angstrom periodicity along the [001] direction and multilevel structure of the ribbons. (C) 2015 Elsevier B.V. All rights reserved.