Relaxation dynamics of the Kondo lattice model

Abstract

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.

References in corpus (11)

• Continuous-time Monte Carlo methods for quantum impurity models
• The numerical renormalization group method for quantum impurity systems
• Hybridization expansion impurity solver: General formulation and application to Kondo lattice and two-orbital models
• Diagrammatic Monte Carlo simulation of non-equilibrium systems
• Theoretical description of time-resolved photoemission spectroscopy: application to pump-probe experiments
• Nonequilibrium Steady State of Photoexcited Correlated Electrons in the Presence of Dissipation
• Continuous-Time Quantum Monte Carlo Method for the Coqblin-Schrieffer Model
• Evolution of a Large Fermi Surface in the Kondo Lattice
• New theoretical approaches for correlated systems in nonequilibrium
• Measuring correlated electron dynamics with time-resolved photoemission spectroscopy
• The Kondo Lattice Model in Infinite Dimensions II. Static Susceptibilities and Phase Diagram

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