Title

Roughening and Preroughening of Diamond-Cubic {111} Surfaces

Authors

Donald L. Woodraska, Michigan Technological University
John A. Jaszczak, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

1-13-1997

Abstract

A solid-on-solid model for {111} surfaces of diamond-cubic materials that correctly takes into account the diamond-cubic crystal structure has been developed for Monte Carlo simulation. In addition to a roughening transition at temperature T_R, a distinct preroughening transition at T_PR≈0.43T_R is indicated by divergences in the surface specific heat and order-parameter susceptibility. Preroughening appears to arise naturally in our nearest-neighbor bond model from the entropic freedom available in the nontrivial crystal structure. Preroughening is shown to dramatically lower the nucleation barrier for growth and etching at low driving forces.

Publisher's Statement

© 1997 The American Physical Society. Deposited here in compliance with publisher policy. Publisher's version of record: http://dx.doi.org/10.1103/PhysRevLett.78.258

Publication Title

Physical Review Letters

Recommended Citation

Woodraska, D. L., & Jaszczak, J. A. (1997). Roughening and Preroughening of Diamond-Cubic {111} Surfaces. Physical Review Letters, 78(2), 258-261. http://doi.org/10.1103/PhysRevLett.78.258
Retrieved from: https://digitalcommons.mtu.edu/physics-fp/13

Version

Publisher's PDF