The Anderson impurity model with a narrow-band host: from orbital physics to the Kondo effect

Details The Anderson impurity model with a narrow-band host: from orbital physics to the Kondo effect The Anderson impurity model with a narrow-band host: from orbital physics to the Kondo effect

2011-05-10

arxiv.org/abs/1105.1983v1

Phys. Rev. B 83, 195110 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

17 pages, 7 figures

Scientific paper

A particle-hole symmetric Anderson impurity model with a metallic host of narrow bandwidth is studied within the framework of the local moment approach. The resultant single-particle spectra are compared to unrestricted Hartree-Fock, second order perturbation theory about the noninteracting limit, and Lanczos spectra by Hofstetter and Kehrein. Rather accurate analytical results explain the spectral evolution over almost the entire range of interactions. These encompass, in particular, a rationale for the four-peak structure observed in the low-energy sector of the Lanczos spectra in the moderate-coupling regime. In weak coupling, the spectral evolution is governed by orbital effects, while in the strong coupling Kondo limit, the model is shown to connect smoothly to the generic Anderson impurity with a flat and infinitely wide hybridization band.

Affiliated with

Also associated with

No associations

Rating

The Anderson impurity model with a narrow-band host: from orbital physics to the Kondo effect 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 The Anderson impurity model with a narrow-band host: from orbital physics to the Kondo effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Anderson impurity model with a narrow-band host: from orbital physics to the Kondo effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-280555