Survival in equilibrium step fluctuations

Details Survival in equilibrium step fluctuations Survival in equilibrium step fluctuations

2003-07-03

arxiv.org/abs/cond-mat/0307086v2

Phys. Rev. E 69, 022101 (2004)

Physics

Condensed Matter

Statistical Mechanics

RevTeX, 4 pages, 3 figures

Scientific paper

10.1103/PhysRevE.69.022101

We report the results of analytic and numerical investigations of the time scale of survival or non-zero-crossing probability $S(t)$ in equilibrium step fluctuations described by Langevin equations appropriate for attachment/detachment and edge-diffusion limited kinetics. An exact relation between long-time behaviors of the survival probability and the autocorrelation function is established and numerically verified. $S(t)$ is shown to exhibit simple scaling behavior as a function of system size and sampling time. Our theoretical results are in agreement with those obtained from an analysis of experimental dynamical STM data on step fluctuations on Al/Si(111) and Ag(111) surfaces.

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