Horn-von Hoegen, Michael; Golla, Anke:
Adsorbate induced change of equilibrium surface during crystal growth: Si on Si(111)/H
1996
In: Physical Review Letters, Jg. 76 (1996), Heft 16, S. 2953 - 2956
Artikel/Aufsatz in Zeitschrift1996Physik
Fakultät für Physik » Experimentalphysik
Titel:
Adsorbate induced change of equilibrium surface during crystal growth: Si on Si(111)/H
Autor(in):
Horn-von Hoegen, MichaelLSF; Golla, Anke
Erscheinungsjahr
1996
WWW URL

Abstract:

Surface termination of Si(111) with atomic hydrogen changes the homoepitaxial growth from a layer-by-layer mode (bare surface) to a faceting of the whole surface. This decomposition of the planar surface into a “hill-and-valley” structure is explained by a change of the surface free energy during Si deposition and H termination. This favors the growth of facets, which are stable as long as the surface is covered with H. The effect is reversible, with the growth mode returning to layer by layer after H desorption.