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arXiv · 0709.1187

A spin-dependent local moment approach to the Anderson impurity model

Choong H. Kim·Jaejun Yu
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Abstract

We present an extension of the local moment approach to the Anderson impurity model with spin-dependent hybridization. By employing the two-self-energy description, as originally proposed by Logan and co-workers, we applied the symmetry restoration condition for the case with spin-dependent hybridization. Self-consistent ground states were determined through variational minimization of the ground state energy. The results obtained with our spin-dependent local moment approach applied to a quantum dot system coupled to ferromagnetic leads are in good agreement with those obtained from previous work using numerical renormalization group calculations.

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Choong H. Kim, Jaejun Yu. 2007-10-15. A spin-dependent local moment approach to the Anderson impurity model. https://doi.org/10.1088/0953-8984%2F19%2F45%2F456203

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