Magnetic properties of the Anderson model: a local moment approach

Abstract

We develop a local moment approach to static properties of the symmetric Anderson model in the presence of a magnetic field, focussing in particular on the strong coupling Kondo regime. The approach is innately simple and physically transparent; but is found to give good agreement, for essentially all field strengths, with exact results for the Wilson ratio, impurity magnetization, spin susceptibility and related properties.

7 pages, 3 postscript figues. Latex 2e using the epl.cls Europhysics Letters macro package

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