Spin-charge separation phenomena in CeNiSn

We have studied the magnetic properties and specific heat in CeNiSn. It is found that the peak of susceptibility in CeNiSn, which is not caused by the long distance antiferromagnetic correlation, shifts to low temperature wit h increasing the magnetic field. The V-shaped density of states can not exp lain the shift although it can explain many other experimental results. We for the first time explain the shift and magnetoresistance measurements by spin-charge separation. The critical field H(c)approximate to 6T, at which the spin gap itself closes, and the spin gap Delta (s)approximate to 18K in CeNiSn are obtained.