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Variational Approach for the Anderson Model: Impurity Pair

Andrzej M. Oleś, K. A. Chao

Abstract

Abstract With a Variational method the effect is studied of impurity‐impurity interaction on the formation of local moments within the framework of the Anderson model. Compared to the similar calculation on. a single impurity, the local moment is enhanced, especially when the two impurities are nearest neighbours of each other with a ferromagnetic direct coupling.

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Available abstract

Key concepts: Impurity, Anderson impurity model, Moment (physics), Condensed matter physics, Ferromagnetism, Magnetic impurity, Variational method, Magnetic moment