Kondo Effect in Two-Band Model

Two-channel Kondo effect in glasslike ThAsSe.

We present low-temperature heat and charge transport as well as caloric properties of a ThAsSe single crystal. An extra -AT(1/2) term in the electrical resistivity, independent of magnetic fields as high as 14 T, provides evidence for an unusual scattering of conduction electrons. Additionally, both the thermal conductivity and the specific heat show a glass-type temperature dependence which si...

The Kondo effect in periodic narrow-band systems

The Kondo divergences owing to interaction of current carriers with local moments in highly correlated electron systems are considered within the Hubbard and s-d exchange models with infinitely strong onsite interaction, the many-electron Hubbard representation being used. The picture of density of states containing a peak at the Fermi level is obtained. Various forms of the self-consistent app...

Electronic correlation and magnetism in multi-band Kondo lattice model

We propose a self-consistent approximate solution of the disordered Kondo-lattice model (KLM) to get the interconnected electronic and magnetic properties of ’local-moment’ systems like diluted ferromagnetic semiconductors. Aiming at (A1−xMx) compounds, where magnetic (M) and non-magnetic (A) atoms are distributed randomly over a crystal lattice, we present a theory which treats the subsystems ...

The one dimensional Kondo lattice model at partial band filling †

On two channel flavor anisotropic Kondo model

Using Abelian Bosonization and Conformal Field Theory, we reinvestigate the two channel flavor anisotropic Kondo model where the two conduction electron channels couple to the impurity spin with different strength. All the possible fixed points of this model have been identified. It is shown that there is only one non-fermi liquid fixed point which is the two channel Kondo fixed point. The syst...