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

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

2007-09-08

arxiv.org/abs/0709.1187v2

J.Phys.Condens.Matter 19:456203,2007

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1088/0953-8984/19/45/456203

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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