Elsevier

Physica B+C

Volume 135, Issues 1–3, 2 December 1985, Pages 276-285
Physica B+C

What can be learned from the normal state resistivity?

https://doi.org/10.1016/0378-4363(85)90483-8Get rights and content

Abstract

A new comprehensive procedure for estimating the electron-phonon coupling constant λ from the high temperature resistivity ϱ(T) of the so-called “Bad Actor” superconductors has been developed. The procedure is applied to Nb3Sn and V3Si for which we find λ(TTc) = 2.3±0.2 and λ(TTc)=2.1±0.2 respectively.

At low temperatures (Tc<T<0.1θDebye) a new universal transition in the resistivity of strongly coupled superconductors has been discovered experimentally. This effect opens up an entirely new way of estimating λ.

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