F Semeriyanov et al 2009 J. Phys. A: Math. Theor. 42 465001 doi:10.1088/1751-8113/42/46/465001
F Semeriyanov, M Saphiannikova and G Heinrich
Show affiliationsOur study is based on the work of Stinchcombe (1974 J. Phys. C: Solid State Phys. 7 179) and is devoted to the calculations of average conductivity of random resistor networks placed on an anisotropic Bethe lattice. The structure of the Bethe lattice is assumed to represent the normal directions of the regular lattice. We calculate the anisotropic conductivity as an expansion in powers of the inverse coordination number of the Bethe lattice. The expansion terms retained deliver an accurate approximation of the conductivity at resistor concentrations above the percolation threshold. We make a comparison of our analytical results with those of Bernasconi (1974 Phys. Rev. B 9 4575) for the regular lattice.
84.32.Ff Conductors, resistors (including thermistors, varistors, and photoresistors)
05.50.+q Lattice theory and statistics (Ising, Potts, etc.)
05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion
82B43 Percolation (See also 60K35)
82B23 Exactly solvable models; Bethe ansatz
82C41 Dynamics of random walks, random surfaces, lattice animals, etc. (See also 60G50)
Issue 46 (20 November 2009)
Received 16 March 2009, in final form 21 September 2009
Published 22 October 2009
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