Magnetic ions embedded in a nonmagnetic host exhibit a number of unusual low-
temperature properties known collectively as the Kondo effect. Conventional small …

Numerous exact results for magnetic impurities in simple metals have been obtained during
the last eight years. These systems exhibit a variety of unusual low-temperature properties …

The ordinary single-channel Kondo model consists of one or more spin-½ local moments
interacting antiferromagnetically with conduction electrons in a metal. This model has …

The infinite-U Anderson model is applied to transport through a quantum dot. The current
and density of states are obtained via the noncrossing approximation for two spin …

Finite-temperature properties of the infinite-U Anderson model for rare-earth alloys are
calculated within a unified approach. The impurity-electron density of states and magnetic …

By using a generalized version of the infinite-U Anderson model, strong-coupling properties
of mixed-valence systems are modeled by means of an expansion about a broken-symmetry …

We give an overview of the use of the impurity Anderson Hamiltonian to describe the
spectroscopic and low-energy thermodynamic properties of cerium intermetallics, with …

A generalization of perturbational studies of the Anderson model to the case of finite
Coulomb repulsion U between the localized electrons is presented. We evaluate one …

Publisher Summary Heavy-fermion compounds exhibit a considerably more stable 4f
configuration, although the 4f occupancy still deviates slightly from integral values. They …

A survey is given of magnetic excitations in metallic 4f systems when the crystal-field splitting
is comparable to or larger than the magnetic interaction between different sites. Particular …