303 research outputs found
Microstructure and Velocity of Field-Driven SOS Interfaces: Analytic Approximations and Numerical Results
The local structure of a solid-on-solid (SOS) interface in a two-dimensional
kinetic Ising ferromagnet with single-spin-flip Glauber dynamics, which is
driven far from equilibrium by an applied field, is studied by an analytic
mean-field, nonlinear-response theory [P.A. Rikvold and M. Kolesik, J. Stat.
Phys. 100, 377 (2000)] and by dynamic Monte Carlo simulations. The probability
density of the height of an individual step in the surface is obtained, both
analytically and by simulation. The width of the probability density is found
to increase dramatically with the magnitude of the applied field, with close
agreement between the theoretical predictions and the simulation results.
Excellent agreement between theory and simulations is also found for the
field-dependence and anisotropy of the interface velocity. The joint
distribution of nearest-neighbor step heights is obtained by simulation. It
shows increasing correlations with increasing field, similar to the skewness
observed in other examples of growing surfaces.Comment: 18 pages RevTex4 with imbedded figure
Comparação entre os métodos de referência e a análise eletrônica na determinação da composição do leite bovino
Colonization by benthic macroinvertebrates in two artificial substrate types of a Riparian Forest
Produção de matéria seca, composição da massa de forragem e relação lâmina foliar/caule + bainha de aveia-preta e triticale nos sistemas de corte e de pastejo
Ocorrência de parasitos gastrointestinais e fatores de risco de parasitismo em gatos domésticos urbanos de Santa Maria, RS, Brasil
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