Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2003-06-03
Physics
Condensed Matter
Disordered Systems and Neural Networks
12 pages, 3 figures, accepted to Phys. Rev. B. Rapid Communication
Scientific paper
10.1103/PhysRevB.68.041403
In many composites the electrical transport takes place only by tunneling between isolated particles. For a long time it was quite a puzzle how, in spite of the incompatibility of tunneling and percolation networks, these composites conform well to percolation theory. We found, by conductance atomic force microscopy measurements on granular metals, that it is the apparent cut-off of the tunneling to non-nearest neighbors that brings about this behavior. In particular, the percolation cluster is shown to consist of the nearest-neighbors sub-network of the full tunneling network.
Azulay D.
Balberg Isaac
Millo Oded
Shimoni Nira
Toker D.
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