Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2001-04-12
Physics
Condensed Matter
Statistical Mechanics
Submitted to Phys.Rev.Lett
Scientific paper
10.1103/PhysRevLett.87.106104
High and low temperature relaxation of crystal steps are described in a unified picture, using a continuum model based on a modified expression of the step free energy. Results are in agreement with experiments and Monte Carlo simulations of step fluctuations and monolayer cluster diffusion and relaxation. In an extended model where mass exchange with neighboring terraces is allowed, step transparency and a low temperature regime for unstable step meandering are found.
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