The electrical resistivity of niobium and niobium-zirconium alloys

Abstract

The electrical resistivity of samples of niobium and 75% Nb 25% Zr alloy have been measured between the superconducting critical temperatures and room temperature. The temperature dependent component of the resistivity has been compared with phenological equations, and it is shown that phonon induced transitions between s and d bands are largely responsible for the observed resistivity. The effect of finite fluctuations of the superconducting order parameter is discussed.