The vicinal Si(111) surface, inclined towards the [-1-12] direction, was investigated by scanning tunnelling microscopy and spot profile analysing low energy electron diffraction. It has been established that the surface, consisting of regularly spaced triple steps and (111) terraces with a width equal to that of a single unit cell of the Si(111)-7x7 surface structure, has the (7 7 10) orientation. An atomic model of the triple step is proposed.
@article{arxiv.1903.06933,
title = {Orientation and structure of triple step staircase on vicinal Si(1 1 1) surfaces},
author = {S. A. Teys and K. N. Romanyuk and R. A. Zhachuk and B. Z. Olshanetsky},
journal= {arXiv preprint arXiv:1903.06933},
year = {2019}
}