Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2003-07-07
Appl. Phys. Lett. vol.83, pag.189 (7 July 2003)
Physics
Condensed Matter
Disordered Systems and Neural Networks
3 pages, 1 figure
Scientific paper
10.1063/1.1590733
We propose a model of transport in thick-film resistors which naturally explains the observed nonuniversal values of the conductance exponent t extracted in the vicinity of the percolation transition. Essential ingredients of the model are the segregated microstructure typical of thick-film resistors and tunneling between the conducting grains. Nonuniversality sets in as consequence of wide distribution of interparticle tunneling distances.
Grimaldi Claudio
Maeder Thomas
Ryser Peter
Straessler Sigfrid
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