There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
The composite material, consisting of metallic particles Ag5Pb2O6 diluted in insulating
CuO matrix, has been investigated in a narrow concentration range separating ballistic
tunnel transport from hopping conductivity. The formation of intergrain conducting
bridges between metallic particles has been avoided by a careful metallurgic treatment.
Resistivity is indicated by temperature dependence lnR~(T0/T)^1/2, and this dependence
appeals an attention for possible one dimensional conductivity which could be looked
upon as a property uniquely associated with an onset of the superconductivity extending
up to Tc ~ 356 K.