| Abstract: | Scaling equations for the Kondo lattice in the paramagnetic and magnetically orderedphases are derived to next-leading order with account of spin dynamics. The results areapplied to describe various mechanisms of the non-Fermi-liquid (NFL) behavior in themultichannel Kondo-lattice model where a fixed point occurs in the weak-coupling region.The corresponding temperature dependences of electronic and magnetic properties arediscussed. The model describes naturally formation of a magnetic state with soft bosonmode and small moment value. An important role of Van Hove singularities in the magnonspectral function is demonstrated. The results are rather sensitive to the type ofmagnetic ordering and space dimensionality, the conditions for NFL behavior being morefavorable in the antiferromagnetic and 2D cases. |
