Magnetoconductivity of AlPdRe quasicrystalline films

Magnetoconductivity (MC) and zero field conductivity have been measured at low temperatures in metallic and barely insulating AlPdRe quasicrystalline films. For a metallic him, both the magnetoconductivity and conductivity ca n be fitted well using the 3D weak localization (WL) and electron-electron interaction (EEI) theories. The AlPdRe films exhibit very strong spin-orbit scattering with tau(so) approximate to 1.5 x 10(-13) s. Therefore, the ine lastic scattering times can be directly extracted from the low field magnet oconductivity data taken at various temperatures, yielding tau(in)(T) appro ximate to 1.6 x 10(-11) T-1 s(-1). Using the fitting parameters extracted f rom the MC data, the zero field conductivity as a function of temperature c an be described nicely using the WL and EEI theories. MC data and conductiv ity data obtained on barely insulating films below the metal-insulator tran sition cannot be explained in the framework of the WL theory.