Since the discovery by Steglich et al.(1979) of superconductivity in the high-effective-mass
(∼ 200 me) electrons in Ce Cu 2 Si 2, the search for and characterization of such" heavy …

Valence fluctuation phenomena occur in rare-earth compounds in which the proximity of the
4f level to the Fermi energy leads to instabilities of the charge configuration (valence) and/or …

The behaviour of magnetic impurities in metals has posed problems to challenge the
condensed matter theorist over the past thirty years. This book deals with the concepts and …

It is observed that the ratio, A/γ 2, has a common value of 1.0× 10− 5 μωcm (mole K/mJ) 2 for
all of the heavy Fermion compounds, where A is the coefficient of the quadratic term in the …

We present a method for calculating the core-level x-ray photoemission (XPS), the 3 d→ 4 f x-
ray absorption (XAS), the valence photoemission, and the bremsstrahlung isochromat …

The authors employ a functional integral approach to the Coqblin-Schreiffer Hamiltonian,
similar to that of Yoshimori and Sakurai (YS-1970) for the Kondo Hamiltonian, except that a …

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

The exact thermodynamic equations of the Coqblin-Schrieffer model are solved in the
scaling regime and the impurity susceptibility and specific-heat curves are obtained as a …

In recent years the class of materials known as intermediate valent, Kondolattice or heavy-
fermion systems has aroused much interest. The unusual properties of these materials arise …

This review considers the experimental and theoretical studies of concentrated Kondo
systems (CKS), Kondo lattices, substitutional solid solutions and their transition from Kondo …