J. Phys. I France 7 (1997) 1455-1473
Relaxatin of a Grooved Profile Cut in a Crystalline Surface of High SymmetryErwan Adam, Anna Chame, Frédéric Lançon and Jacques Villain
Département de Recherche Fondamentale sur la Matière Condensée, CEA Grenoble, 38054 Grenoble Cedex 9, France
(Received 17 February 1997, revised 19 June 1997, accepted 27 June 1997)
The smoothing of artificial grooves on a high-symmetry crystal surface below its roughening transition is investigated in the light of a one-dimensional model. In the case of diffusion dynamics, a new, kinetic, attractive interaction between steps opposes the contact repulsion and tends to flatten the top and the bottom of the profile in the transient state anterior to complete smoothing. This phenomenon, which is absent from continuum models, is weaker, but still present in real, two-dimensional surfaces.
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