Quadrupole scattering in magnetoresistivity of PrPb sub 3

The transverse rho sub perpendicular and the longitudinal magnetoresistance rho sub (parallel to) of a PrPb sub 3 single crystal was measured in the temperature range 2 < T < 4.2K. The temperature dependence of the measured magnetoresistance anisotropy ( rho sub perpendicular - rho sub (parallel to) ) was compared with that theoretically predicted if the influence of the quadrupole scattering mechanism on magnetoresistivity is taken into consideration. The comparison shows that quadrupole scattering processes in PrPb sub 3 are essential.