Weak-localization and Coulombic interaction effects in the low-temperature resistivity and magnetoresistivity of Y-Al metallic glasses

We report measurements of the electrical resistivity and magnetoresistivity of the nonsuperconducting and nonmagnetic metallic glass ${\mathrm{Y}}_{1\mathrm{-}\mathrm{x}}$ ${\mathrm{Al}}_{\mathrm{x}}$ (0.2≤x≤0.4) from 60 mK to 17 K and in magnetic fields up to 4.3 T. We find that weak localization and Coulombic interaction provide a good quantitative description of the temperature dependence of the electrical resistivity but only a semiquantitative description of the magnetoresistivity.