Abstract
Experimental data on PdH x (D) at 300 K shows electrical resistivity ρ lower than that of the pure Pd for stoichiometry x= H/ Pd close to the unit. At this stoichiometric value x=1 a T c of 9 K and higher T c for x>1 have been measured. In these systems T c increases with stoichiometry x, hence a phenomenological description of the ρ for highly loaded PdH(D) system at 300 K has been developed. This approach uses a parallel model of two concurrent electrical transport processes: (i) ρ has a linear raise with the x, due to the increase of Pd lattice relative volume, (ii) ρ has an exponential decrease versus x due to superconducting fluctuations at very high x in PdH(D). Under the assumption of our model, PdH x could be considered as a possible room temperature superconductor. Inverse isotopic effect for 0.6> x>0.96 changes to normal isotopic effect at stoichiometry x Ψ >1.
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