Title
Roughening and preroughening of diamond-cubic {111} surfaces
Document Type
Conference Paper/Presentation
Publication Date
1996
Abstract
Using a new solid-on-solid model that correctly takes into account the diamond-cubic crystal structure, both a roughening transition at temperature TR and a distinct preroughening transition at TPR≈0.43TR are found to exist on {111}surfaces of diamond-cubic materials. Results are presented for height-difference correlation functions, surface specific heats, step energies, etch rates, and a preroughening order parameter. Preroughening appears to arise naturally in our nearest-neighbor bond model from the entropic freedom available in the non-trivial crystal structure suggesting that preroughening may be more common than previously anticipated. Preroughening is shown to dramatically lower step energies and step-energy anisotropy on the {111} surface. Preroughening of Si{111} may have been seen in experiments by Noh et al. [Phys. Rev. B 48, 1612 (1993)].
Publication Title
MRS Proceedings
Recommended Citation
Woodraska, D. L.,
&
Jaszczak, J. A.
(1996).
Roughening and preroughening of diamond-cubic {111} surfaces.
MRS Proceedings,
440.
http://doi.org/10.1557/PROC-440-71
Retrieved from: https://digitalcommons.mtu.edu/physics-fp/43
Publisher's Statement
© 1997 Materials Research Society. Publisher’s version of record: http://dx.doi.org/10.1557/PROC-440-71