Magnetic field dependence of the electrical resistivity in non-fermi liquid U0.05Y0.95Al2, U0.2Y0.8Pd3 and UCu5-xPdx (x=1.0, 0.9)

We investigate the influence of applied magnetic fields up to B = 8 T on th e electrical resistivity attemperatures down to 1.5 K for three established non-Fermi liquid systems U0.05Y0.95Al2, U0.2Y0.8Pd3 and UCu5-xPdx (x = 1.0 , 0.9). We follow the approach that an unconventional Kondo mechanism is of ten seen to be operative at low temperatures in some non-Fermi liquid syste ms where there are logarithmic or power-law divergences in the temperature dependences of magnetic susceptibility, the specific heat, and the electric al resistivity. In the above systems the incoherent Kondo scattering domina tes the electrical resistivity rho (T) at higher temperatures, while at low temperatures rho similar to T-n with n approximate to 1, instead of n = 2 as expected for a Fermi-liquid. We show how the power-law dependence is aff ected by a magnetic field. The isothermal magnetoresistivity as a function of field is analysed in terms of the Bethe ansatz description in order to e xtract values of the characteristic Kondo temperature T-K.