MAGNETORESISTANCE OF PR1.85CE0.15CUO4-CRYSTALS IN THE NONSUPERCONDUCTING STATE(DELTA SINGLE)

We report magnetoresistance measurements of single crystals from the n -type superconductor Pr2-xCexCuO4+delta for concentrations of optimum superconductivity x almost-equal-to 0.15. In the as-prepared state we find a strongly anisotropic negative magnetoresistance at low temperat ures. For the magnetic field direction parallel to the c-axis the magn etoresistance can perfectly be fitted by two-dimensional weak localiza tion theory. For the inelastic scattering time we derive a power law t au(i) approximately T-0.46.