Anomalous Hopping Exponents of Ultrathin Films of Metals

Details Anomalous Hopping Exponents of Ultrathin Films of Metals Anomalous Hopping Exponents of Ultrathin Films of Metals

2000-01-12

arxiv.org/abs/cond-mat/0001162v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

6 pages, 5 figures

Scientific paper

10.1103/PhysRevB.62.2195

The temperature dependence of the resistance R(T) of ultrathin quench-condensed films of Ag, Bi, Pb and Pd has been investigated. In the most resistive films, R(T)=Roexp(To/T)^x, where x=0.75. Surprisingly, the exponent x was found to be constant for a wide range of Ro and To in all four materials, possibly implying a consistent underlying conduction mechanism. The results are discussed in terms of several different models of hopping conduction.

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