Magnetic Impurities in Metals

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Abstract
This paper discusses some features of the electronic structure of magnetic impurities in metals. For impurities in normal metals, applications of the model of resonant scattering states are made in the following directions: (1) discussion of the orbital degeneracy within the Hartree‐Fock approximation and applications, particularly to cerium; (2) discussion of the magnetic solutions: effective values of J, occurrence of magnetism, and the Kondo effect; (3) influence of correlation. The properties of impurities in transition metals are also discussed: magnetic moments, specific heat, resistivity. Evidence for two‐current conduction in ferromagnetic metals is given. The paper ends with a discussion of dynamical properties of impurities.