Magnetic disorder resistivity of RECu2Si2 compounds

The resistivity of RECu₂Si₂ compounds contains a term which is due to a mixture of spin and aspherical Coulomb scattering. The disorder resistivities and the ordering temperatures scale well with each other but deviate strongly from the de Gennes factor. The deviations scale with an anomaly of the c/a ratio which develops at low temperatures for the RE ions with L ≠ 0.