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arxiv: cond-mat/0001162 · v1 · submitted 2000-01-12 · ❄️ cond-mat.dis-nn

Anomalous Hopping Exponents of Ultrathin Films of Metals

N. Markovic , C. Christiansen , D. E. Grupp , A. M. Mack , G. Martinez-Arizala , A. M. Goldman This is my paper
classification ❄️ cond-mat.dis-nn
keywords filmsconductionhoppingultrathinanomalousbeenconsistentconstant
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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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