Critical hybridization for the Kondo resonance in gapless systems

Details Critical hybridization for the Kondo resonance in gapless systems Critical hybridization for the Kondo resonance in gapless systems

2009-10-19

arxiv.org/abs/0910.3557v1

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 7 figures

Scientific paper

We study the Kondo resonance in a spin-1/2 single impurity Anderson model with a gapless conduction band using the equation of motion approach in order to obtain the impurity spectral function. We study two different scenarios for gapless systems: a purely power-law energy dependence of the density of states or a constant density of states with a gapless behavior near the Fermi level. We demonstrate that strong electron-electron correlations lead to a sharp peak in the impurity spectral function in the case of a large exchange coupling ($J>J_{c}$) or equivalently, a strong hybridization ($V>V_{c}$). This Kondo-like peak emerges much below the Fermi level in the case of a strongly depleted density of states. These results are compared with the ones from renormalization group approaches.

Affiliated with

Also associated with

No associations

Rating

Critical hybridization for the Kondo resonance in gapless systems 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 Critical hybridization for the Kondo resonance in gapless systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Critical hybridization for the Kondo resonance in gapless systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-716270