Relaxation dynamics of the Kondo lattice model

Details Relaxation dynamics of the Kondo lattice model Relaxation dynamics of the Kondo lattice model

2012-04-24

arxiv.org/abs/1204.5418v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

We study the relaxation properties of the Kondo lattice model using the nonequilibrium dynamical mean field formalism in combination with the non-crossing approximation. The system is driven out of equilibrium either by a magnetic field pulse which perturbs the local singlets, or by a sudden quench of the Kondo coupling. For relaxation processes close to thermal equilibrium (after a weak perturbation), the relaxation time increases substantially as one crosses from the local moment regime into the heavy Fermi liquid. A strong perturbation, which injects a large amount of energy, can rapidly transform the heavy Fermi liquid into a local moment state. Upon cooling, the heavy Fermi liquid reappears in a two-stage relaxation, where the first step opens the Kondo gap and the second step corresponds to a slow approach of the equilibrium state via a nonthermal pathway.

Affiliated with

Also associated with

No associations

Rating

Relaxation dynamics of the Kondo lattice model 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 Relaxation dynamics of the Kondo lattice model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relaxation dynamics of the Kondo lattice model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-520494