Quadratic temperature dependence of electron–phonon scattering in disordered V1−xPdx alloys

We report the results of a comprehensive study of weak localization and electron–electron interaction effects in disordered V1−xPdx alloys whose compositions are close to the (low Tc) A15 V3Pd compound. Magnetoresistivity and zero field resistivity have been measured within the temperature range 1.5≤T≤300 K. The low-temperature resistivity obeys a ρ o 5 / 2 T 1 / 2 law, which is explained by electron–electron interaction. We have determined the electron–phonon scattering time (τe–ph) for V1−xPdx alloys. Our results indicate an anomalous electron–phonon scattering rate τ e – ph − 1 obeying quadratic temperature dependence. This observation is interpreted by the existing theories of electron–phonon interactions.