Abstract
Resistivity ρ ( T ) and Hall coefficient R H ( T ) in magnetic fields H up to 13.6 T were studied in superconducting ( T C = 1.8 K ) PrOs 4Sb 12 single crystals disordered by fast neutron irradiation. Disordering leads to very fast suppression of superconductivity and to large increase in low-temperature values of both ρ and R H . Kondo-like magnetic scattering is observed in disordered crystals. Positive magnetoresistance in the crystals with different values of disordering is observed only at T < 10 K . It is an evidence of magnetic field influence on the band of conduction electrons. It is shown that the electronic transport in a PrOs 4Sb 12 can be described by two-band model including heavy and light holes.
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