Magnetoresistance study of a thin α-tungsten film

The resistance of an {α}-tungsten film was measured in the temperature range 0.35--30 K and in the magnetic field up to 2.5 T. The obtained dependences of the magnetoresistance are interpreted in terms of the Maki-Thompson-Larkin superconducting fluctuation effect; however, the magnitude of the magnetoresistance exceeds the theoretical value by an order of magnitude. From the magnetoresistance data the dephasing scattering length was determined and the contributions of magnetic impurities, electron-electron, and electron-phonon scatterings were extracted. The experimental electron-electron and electron-phonon scattering lengths are satisfactorily described by the existing theory.