Abstract
We consider the problem of percolation in a system having sites distributed at random, but in which only a fractionh of the physical overlaps form viable links. We convert this to a site problem on the covering lattice, and then show that in two dimensionsh ∼- 1/S 4 forh ∼- 1, andh ∼- 4)S2 forh ≪ 1, whereS is proportional to the critical percolation radius in the original array. This result reproduces the T−1/3 behavior for log(conductivity) expected of variable-range hopping and found by numerical methods. It also accounts for the region of transition tor-percolation asT → ∞. We make a prediction that in three dimensions,h = 1/8S3 + const/S6, but numerical confirmation is lacking for this case. While the argument is not exact, we have demonstrated a novel approach to random systems.
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Supported by the National Research Council of Canada.
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Wintle, H.J., Puhach, P.A. Probabilistic bond percolation in random arrays. J Stat Phys 18, 557–575 (1978). https://doi.org/10.1007/BF01014479
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DOI: https://doi.org/10.1007/BF01014479