Symmetric Anderson impurity model with a narrow band

Details Symmetric Anderson impurity model with a narrow band Symmetric Anderson impurity model with a narrow band

1998-12-30

arxiv.org/abs/cond-mat/9812427v2

PRB 59, R12732 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages RevTeX, 2 eps figures included, final version

Scientific paper

10.1103/PhysRevB.59.R12732

The single channel Anderson impurity model is a standard model for the description of magnetic impurities in metallic systems. Usually, the bandwidth represents the largest energy scale of the problem. In this paper, we analyze the limit of a narrow band, which is relevant for the Mott-Hubbard transition in infinite dimensions. For the symmetric model we discuss two different effects: i) The impurity contribution to the density of states at the Fermi surface always turns out to be negative in such systems. This leads to a new crossover in the thermodynamic quantities that we investigate using the numerical renormalization group. ii) Using the Lanczos method, we calculate the impurity spectral function and demonstrate the breakdown of the skeleton expansion on an intermediate energy scale. Luttinger's theorem, as an example of the local Fermi liquid property of the model, is shown to still be valid.

Affiliated with

Also associated with

No associations

Rating

Symmetric Anderson impurity model with a narrow band does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Symmetric Anderson impurity model with a narrow band, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Symmetric Anderson impurity model with a narrow band will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-725917