Infinite family of persistence exponents for interface fluctuations

Details Infinite family of persistence exponents for interface fluctuations Infinite family of persistence exponents for interface fluctuations

2003-03-11

arxiv.org/abs/cond-mat/0303214v2

Phys. Rev. Lett. 91, 086103 (2003)

Physics

Condensed Matter

Statistical Mechanics

LaTeX, 4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.91.086103

We show experimentally and theoretically that the persistence of large deviations in equilibrium step fluctuations is characterized by an infinite family of independent exponents. These exponents are obtained by carefully analyzing dynamical experimental images of Al/Si(111) and Ag(111) equilibrium steps fluctuating at high (970K) and low (320K) temperatures respectively, and by quantitatively interpreting our observations on the basis of the corresponding coarse-grained discrete and continuum theoretical models for thermal surface step fluctuations under attachment/detachment (``high-temperature'') and edge-diffusion limited kinetics (``low-temperature'') respectively.

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