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Stochastic method for accommodation of equilibrating basins in kinetic Monte Carlo simulations

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Clinton DeW Van Siclen

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FAST TRACK COMMUNICATION

A computationally simple way to accommodate 'basins' of trapping states in standard kinetic Monte Carlo simulations is presented. By assuming that the system is effectively equilibrated in the basin, the residence time (time spent in the basin before escape) and the probabilities for transitions to states outside the basin may be calculated. This is demonstrated for point defect diffusion over a periodic grid of sites containing a complex basin.


PACS

66.30.Lw Diffusion of other defects

71.55.-i Impurity and defect levels

71.15.Dx Computational methodology (Brillouin zone sampling, iterative diagonalization, pseudopotential construction)

61.72.J- Point defects and defect clusters

Subjects

Condensed matter: electrical, magnetic and optical

Condensed matter: structural, mechanical & thermal

Dates

Issue 7 (21 February 2007)

Received 19 October 2006, in final form 27 November 2006

Published 2 February 2007



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