Positive Magnetoresistance of Kondo Lattices

抄録

The residual resistivity of Kondo lattices is theoretically investigated. Randomness of ligands should play an important role, i.e., randomness of hybridization or conduction electron levels. It has been shown that randomness of renormalized f levels is small in the absence of magnetic fields, while it increases with increasing fields. Therefore a positive magnetoresistance is predicted at low temperatures.