Abstract

It is found that the variation of magnetoresistance of CeNi 1– x Cu x Sn is very small in 7 T magnetic field and the absolute value of the variation surprisingly decreases with the substitution of Cu for Ni in contrast to our expectation of magnetic field suppressing the gap although the magnetic susceptibility of CeNi 1– x Cu x Sn obviously increases with x especially at low temperature. The behavior of magnetoresistance in CeNi 1– x Cu x Sn is determined not only by the density of state but also by impurity scattering due to the enhancement of antiferromagnetic correlations with the substitution of Cu for Ni.

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