RT Journal Article
T1 Smoothing of rough surfaces
A1 Sánchez, Angel
A1 Bishop, Alan R.
A1 Cai, David
A1 Gronbech-Jensen, Niels
AB Simulations of surface smoothing (healing) by Langevin dynamics in large systems are reported.The surface model is described by a two-dimensional discrete sine-Gordon (solid-on-solid) equation.We study how initially circular terraces decay in time for both zero and finite temperatures andwe compare the results of our simulations with various analytical predictions. We then apply thisknowledge to the smoothing of a rough surface obtained by heating an initially flat surface abovethe roughening temperature and then quenching it. We identify three regimes in terms of theirtime evolution, which we are able to associate with the resulting terrace morphology. The regimesconsists of a short initial stage, during which small scale fluctuations disappear; an intermediate,longer time interval, when evolution can be understood in terms of terraces and their interaction;and a final situation in which almost all terraces have been suppressed. We discuss the implicationsof our results for modeling rough surfaces.
PB American Physical Society
SN 1098-0121 (print version)
SN 1550-235X (online version)
YR 1995
FD 1995-08-15
LK https://hdl.handle.net/10016/14929
UL https://hdl.handle.net/10016/14929
LA eng
NO Work at Los Alamos is performed under the auspices of the U.S. DOE. Work by A.S. was also supported by MEC (Spain)jFulbright at Los Alamos and by CICyT (Spain) through project MAT95-0325 at Leganes
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RD 1 sept. 2024